Chainsaw Repair
Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Modified Ported Work or Race saws => Topic started by: EHP on October 23, 2014, 05:22:12 pm
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am placing a order for new pistons from Wiseco, 52mm, 60mm, 62mm, and 66 mm so if anyone wants any speak up cause their selling real fast and not sure when or if there will be a next order
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ED, I'll take two 66mm PM me for payment details. Thank you. Adam
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Adam, no problem on payment , I need to get an answer from wiseco on finish build date and when I get that I will post it here , If anyone else needs 60,62 or 66mm speak up so I can increase the order as its about 80% sold out already
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The 52 for the 7900?
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272, Dolmar I believe...
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52mm fits the 272 which is the base piston I used to build the wide skirt from but will fit the 7900 and the 460 stihl, now remember these pistons are for race not woods port AND you have to have the cylinder bore replated in nikisal cause the ring used from Wiseco is only meant to run on nikisal , if you put this ring in a standard chrome bore it will last a very very short time cause the ring will tear the chrome plating all to hell . You also need to use the light weight 460 wrist pin . Another thing when getting the cylinder replated I run abit more clearance , Box says .0015 , I run .0022 to .0025 clearance plus the clearance given on the box was before the coating on the piston so your under the .0015 in true measurement with coating , .0015 is just to tight for my liking
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ED, I'll take two 66mm PM me for payment details. Thank you. Adam
Hey Adam, will I need any? Maybe a 62mm?
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aclarke, because Im curious, what are you doing with the 66mm
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3120/090 hotsaw
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aclarke, because Im curious, what are you doing with the 66mm
3120/090 hotsaw
LOL I guess ole Jeff dont know you Adam. Jeff check out some of his pics in threads of his work.
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Mike the 52mm piston in in the dolmar piston thread to show the comparison of skirts.
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just got off the phone with Wiseco, they are saying the end of Dec. but I'm thinking the first couple weeks in Jan. they have to send the pistons out to get the coating I like on them and that takes a week or 2 , Donot know the price at this point as I made the order abit bigger so cost ,ight come down abit per piston , Should know cost here shortly
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emails giving the go ahead on building them has been sent so now we wait until there built , They are saying it could be mid Dec. now but I'm thinking the start of the new year
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couple pics of the 66mm Ed designed...
(http://i1184.photobucket.com/albums/z329/Aclarke123/20141024_183849_zps553c42e0.jpg)
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(http://i1184.photobucket.com/albums/z329/Aclarke123/20141024_183742_zps5537df56.jpg)
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3120/090 case/cylinders
(http://i1184.photobucket.com/albums/z329/Aclarke123/20141024_190004_zps2d6d9e7c.jpg)
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Nice Adam.
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So this is what I'm going to do guys , All pistons are going to Jerry Gingras , reason is so I donot have to bring them back across the border then have to send them back across the border so it makes mailing the pistons alot easier and cheaper for you guys , I just got the price this morning and they are going to be $200 a piece plus shipping . If you donot know Jerry phone number just get a hold of me but no need to call him until we have the pistons in his hands or close to that date ok
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Sounds good. Thanks
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http://www.stihlusa.com/stihl-timbersports/athletes/pro-competitor/jerry-gingras/
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pistons are already being built so they could be done in late Dec.
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Sounds good!
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pistons are done and on their way to Jerry, so get your order in now before they are all gone as lots of people are after them , if you donot have Jerry's phone number let me know ok
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pistons are at Jerry's now
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Ed. Can you pm me Gingras phone # thanks, Adam
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if anybody else needs Jerry's number just ask and I want 1 thing clear , anybody can buy a piston ok , if you got the money and we have a piston in stock its yours , none of this I wonder if he will sell me one stuff
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is there such a thing as a 55mm, wide skirt, windowed piston?
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if you want to make it there is , wiseco is just like a hooker on the corner of any street , you got the cash they will build you any piston you want as long as its big enough in mm , they could not build small bore sizes last time I asked but if someone wants to pay for the mold to be made they would build it I think
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Ed I have no clue on this stuff. But is it possible for someone to take a 56mm down to 55mm and re-groove for ring. Or does it remove to much material aka making skirts to thin etc to try?
Also Scott, Vince Loy from Arkansas makes one off pistons for a pretty hefty price.
Vince = You can make those pistons. You can use 7075T651 base stock it is good and tough, You will need to make them
with a total clearance of' MIM. .004 to .0065 Max after you must" have them hard anodized to a
.001 in and .001 out coating, It is a much better process than my Spray- Moly coatings I was using..
When you do the pin bores make them .0015 lager than standard slip no more that that, If there is extra build up
in the pin bores you can buy a Diamond Hone and slip fit Hone for .0004 Clearance max
I hope this helps.
Vince Loy/ Precision Eng & cnc machine shop 501-865-6969 or 501-282-6210 if you need help
Hello:
I have cured a problem 100%
I'm having a hard coating put an all my new pistons these days. It has really moved
the piston forward as far as Durability! They are better than ever from start to Finish..
And I have completed Torture Testing & They are super Tough!
They are very slick and near Friction free} I'm having the piston 100% Electro' Chemical Hard
anodized, NO Fancy Color { Just the real Industrial Hard coating applied}
The ring Lands do not wear & stick like the none coated pistons do!
This is the Best thing I have found that is affordable..
For piston help vloypreeng@catc.net
Phone 501-865-6969
cell 501-282-6210
I'm Making Custom crankshaft for all brands of SA. & Hot pipe saws!!
My contact info is
Vince Loy
501-865-6969 Shop
501-282-6210 Cell
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Pictures are with a cell phone. When two pictures there a old and the new piston. He made several of these as the manufacturer went out of business.
(http://www.rcuniverse.com/forum/attachment.php?attachmentid=2040825&d=1413641379)
(http://www.rcuniverse.com/forum/attachment.php?attachmentid=2040827&d=1413641410)
(http://www.rcuniverse.com/forum/attachment.php?attachmentid=2040828&d=1413641426)
(http://www.rcuniverse.com/forum/attachment.php?attachmentid=2040830&d=1413641456)
(http://www.rcuniverse.com/forum/attachment.php?attachmentid=2041519&d=1413916567)
This guy is from Blackfoot, ID. I have contact info.
He makes two stroke piston from billet stock 4032 from McMaster Carr.
I don't know what he charges but he's made a few so he must be reasonable?
He has straightened a crank for me and made some machined parts. I was always happy with his work.
His shop is adjacent to his house. He probably does more automotive engine machine work? But he does little lathe and milling machine jobs too.
He has made several two stroke crankcases and reed valve vee blocks and made one opposed twin from Single P&C assemblies.
http://chainsawrepair.createaforum.com/rc-radio-control-other-small-engines/making-a-twin/
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Kevin unless you can buy a thin ring to fit that 55mm bore that will fit the wiseco piston to me it makes more sense to go 56mm , I'm thinking guys are looking for pistons to fit 390 huskies but with 56 mm you could also do 2100/394/395 and just bore the 390 jug to 56mm . If there is no thin ring to run on chrome you need to replate the jug any how . I have built more than my share of pistons and never had any break like lots have but I can have wiseco build me what I want for alot less money than what my time is worth , If enough people talk to me on getting 55mm pistons made I can check and see but will need a brandnew 55 mm piston to take measurements from and then see if wiseco has and 55 mm rings to run on chrome bore , I'm pretty sure they got rings to run on niskasil
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I'd say if there was a run on 390 pistons there would be several people buy them.
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thanks again for the info
been thinking of using a 288 piston in a 385 cylinder, but I think the port duration will be a problem, maybe free port.
unsure of what i'm going to do yet. would like to use a piston that's already out there.
I think I will be using a 660 rod. it's 3 mm longer.
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That will be cool Scott. The no 2 piece heads kind of messed up what I wanted to try.
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Scott I'm sure not a fan of any of the thick ring pistons out there , they cannot stand the rpm , stuff like the 395 or the 066/660 break the ring land everytime you try to build a high rpm motor , something that spins in the wood above 13,500 rpms under load so the 390 would be pretty much just as bad, Now a single thick ring piston is pretty but sometimes the ring will break or float on you , drilling holes in the top of the piston to shove the ring out helps but just watch not to make the holes to big cause if to much pressure pushing on the ring will cause the ring to either hook bad or just wear real fast where it travels over the port opening , been there done that
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is this to do with that 385/390 build thats going on at another site , how come no head ? I thought it was to be a worksaw and some guys do put heads on there worksaws
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seen a 066 piston that was done like that in the 066 work saw build. holes drilled from the top.
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because some folks dont build heads. so the rules are set to their favor ;)
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JMO a real work saw build should be 100% what the saw came with. Just like it is bought.
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my view of a real worksaw is a saw that cuts timber like my saws do and I see no reason why I could not build a head on any of them and make them work fine for cutting 8 plus hours a day for months at a time
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ed did you get some 54mm 272 pistons made
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No EJ , no class here for them so stayed with 52mm, if guys wanted 5 cu 272 they just got stroked to 38 mm and use a rod from a 371/365 which was 3 mm longer than the 272 rod
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ok thanks
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same with the 372 xp if wanted 5 cu then bore to 52 mm and stroke to 38 mm , they work pretty good as well
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ed did you do a batch of 64mm 3120 pistons and do you have anymore 62mm pistons left
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I had 52mm, 60 mm, 62mm and 66mm pistons made this time , Get ahold of Jerry Gingras as he has all the pistons at his place and I think there should be some of each left but they are selling pretty fast
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I just got 54mm pistons made and 68mm and 70mm i'll get ahold of him for a 62mm thanks have you ever got 64mm pistons just wondering if the 3120 cylinder can be taken that far
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no never had 64mm made , 46mm stroke by 62mm bore puts it right at 140 cc limit
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Lot of places dont have 140cc limit like Webster.
Just stock appearing does. Chardon is that way and many others. Run what you brung. .
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up here its all 140 cc limit and in Quebec its the same , most places here have a open class but its in 16 inch wood and the bikesaws will win that
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Ed have you ever put a 3120 crank in a 2100 just wondering and if so how far can a guy strok it I have heard of 3mm stroke I was thinking of stroking it 4mm and a 62 mmpiston and put the crank and cylinder on a 2100 for Webster because the 2100 is better balanced at least for me what do you think
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you can run the same crank that everyone runs in the 3120 , 4 mm will fit using the 084 rod , if your running a 3120 crank you will need to open up the crankcase alot to get enough volume to pass enough air threw it , a 2100 crank fits the volume alot better but is more likely to break under load . If you want to cut metal you can pretty much put anything in a crankcase , I put a 3120 crank in a 281 crankcase just to see how it worked , ran ok but was not better that is forsure , just no room in the case with that big crank in it
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Thanks ed
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EJ do you have a extra OEM (66mm) 090 jug for sale, Id be interested if you did. Ed had an awful go with the 70mm piston to cold start in the 3120 bottom end, maybe you guys will have better luck. Would make a high end hot start saw out west. 66mm are boss, but illegal half the places you go...so no go
Ed I believe the 54mm piston is of interest for the Poulan 505 (?) same thing that Marcel made Jerry...a few carcasses are kicking around the web and there is interest in boost port with finger ports for a full fledge 5cu muffler.
I wonder why no one is talking about the 281/181 for the 5 cube another saw that needs no expensive crank work.
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I was told Jerry's MVP poulan is 52mm 475 77cc not the 505 54mm. Watched it run several times.
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for a 5 cu muffler the 181/281 is a hard saw to beat
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I was told Jerry's MVP poulan is 52mm 475 77cc not the 505 54mm. Watched it run several times.
by Jerry?
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I think Jerry is now running a 372 saw in the 5 cu
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I was told Jerry's MVP poulan is 52mm 475 77cc not the 505 54mm. Watched it run several times.
by Jerry?
So my question to YOU is where in the heck did you hear a 54mm piston was in Jerry's saw? Jerry? :D :D :D
I was told by his side kick from STS as we watched Jerry run it. He also races said saw which is a poulan 415 with a 475 topend.
Matter of fact I just sold a part from my stash of 415 475 for the racesaw. ;)
Jeff now I want you to use commonsense here. Webster tears down the top 3 saws in 5ci. Jerrys saw has won there and passed cc. ;) 54mm piston wouldnt pass.
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Never been near that saw but I'm pretty sure I know what piston would be in it cause just about every small saw got that piston cause its the best piston made and that is the 52mm wide skirt 272 piston and I know Marcel never made any 54mm pistons but he made alot of those 52 mm pistons so putting a 54 mm piston from a stock chainsaw would be going backwards , what you guys need to figure out is just because you can build a motor bigger does not make it faster , in alot of causes the saw ends up slower , crankcase volume is one of the biggest things you need to figure out to make a saw fast
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Never been near that saw but I'm pretty sure I know what piston would be in it cause just about every small saw got that piston cause its the best piston made and that is the 52mm wide skirt 272 piston and I know Marcel never made any 54mm pistons but he made alot of those 52 mm pistons so putting a 54 mm piston from a stock chainsaw would be going backwards , what you guys need to figure out is just because you can build a motor bigger does not make it faster , in alot of causes the saw ends up slower , crankcase volume is one of the biggest things you need to figure out to make a saw fast
Thank You Ed. ;)
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there you go...
why the interest in 54 mm then...
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there you go...
why the interest in 54 mm then...
Who you?
Ed I believe the 54mm piston is of interest for the Poulan 505 (?) same thing that Marcel made Jerry...a few carcasses are kicking around the web and there is interest in boost port with finger ports for a full fledge 5cu muffler.
Who? Your the only one I see bringing it up with the 505. :D
Like I said before 54mm is not legal for 5ci in a 505. Why do you keep bringing up 54mm and 505?
Again Jerry's is 52mm ::)
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Jeff only person besides you I can find mentioning 54mm was Ej. Never did Ej put 54mm and 505 together in a sentence. Only you.
@ej only brought up he had 54mm pistons made.
I doubt it was for a 505 cheater saw.
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I am sure Jerry's saw is legal , The main reason Jerry wins so dam many races is because of him , he is that dam fast on cold start and runs the saw pretty much prefect , I'm not saying Jerry's saws are not fast because they are but put both together and thats a hard combo to beat
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I am sure Jerry's saw is legal , The main reason Jerry wins so dam many races is because of him , he is that dam fast on cold start and runs the saw pretty much prefect , I'm not saying Jerry's saws are not fast because they are but put both together and thats a hard combo to beat
Besides that.
I have never heard of Marcel Vincent building a saw that dont fit inside the rules. Have you Ed?
Know of many down here that built cheater saws, but never seen a MVP built one.
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Jeff only person besides you I can find mentioning 54mm was Ej. Never did Ej put 54mm and 505 together in a sentence. Only you.
@ej only brought up he had 54mm pistons made.
I doubt it was for a 505 cheater saw.
yup same guy..then why the interest?
He bought a California 54 mm and so did Jerry..I don't care about a cheater saw..really..I don't imply anything Kevin..Id say it
I'm just intrigued why there is interest.
how about destroking a large diam piston...nah doesn't work
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I am sure Jerry's saw is legal , The main reason Jerry wins so dam many races is because of him , he is that dam fast on cold start and runs the saw pretty much prefect , I'm not saying Jerry's saws are not fast because they are but put both together and thats a hard combo to beat
Besides that.
I have never heard of Marcel Vincent building a saw that dont fit inside the rules. Have you Ed?
Know of many down here that built cheater saws, but never seen a MVP built one.
Kevin what does a 505 cc at? 82 or 3 and a 5 cu is 81.??? **** happens..Simon ran a 2mm stroked 272 or 371 in the 0 -80 in Minden the last time and said straight out on Eds forum they are all stroked now for Webster..
as a side note,Andy ran a 76cc and Chris ran a 72cc and were 100's behind him..whatever, old news.
the curious side in me wonders about 54mm pistons and 70mm...in this part of the world.Your the only one bringing up cheater saws.
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I am sure Jerry's saw is legal , The main reason Jerry wins so dam many races is because of him , he is that dam fast on cold start and runs the saw pretty much prefect , I'm not saying Jerry's saws are not fast because they are but put both together and thats a hard combo to beat
Besides that.
I have never heard of Marcel Vincent building a saw that dont fit inside the rules. Have you Ed?
Know of many down here that built cheater saws, but never seen a MVP built one.
Kevin what does a 505 cc at? 82 or 3 and a 5 cu is 81.??? **** happens..Simon ran a 2mm stroked 272 or 371 in the 0 -80 in Minden the last time and said straight out on Eds forum they are all stroked now for Webster..
as a side note,Andy ran a 76cc and Chris ran a 72cc and were 100's behind him..whatever, old news.
the curious side in me wonders about 54mm pistons and 70mm...in this part of the world.Your the only one bringing up cheater saws.
I see now you really have no clue and was just assuming people were running a 54mm in their poulan 5ci class saw. Shame to post such without knowing what you are talking about.
You made the accusation that Jerry was running a 54mm in his poulan. All right here. ;)
Also FACT not read or hearsay like you post. I owned a 372 5ci 76cc. I choose stock stroke to save $400. The stroked 372 81cc was just a hair faster per 8x8 cut. Like the stroked should be. ;) That was back then when the first 2 were built. Where they are now I dont care.
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I am sure Jerry's saw is legal , The main reason Jerry wins so dam many races is because of him , he is that dam fast on cold start and runs the saw pretty much prefect , I'm not saying Jerry's saws are not fast because they are but put both together and thats a hard combo to beat
Besides that.
I have never heard of Marcel Vincent building a saw that dont fit inside the rules. Have you Ed?
Know of many down here that built cheater saws, but never seen a MVP built one.
Kevin what does a 505 cc at? 82 or 3 and a 5 cu is 81.??? **** happens..Simon ran a 2mm stroked 272 or 371 in the 0 -80 in Minden the last time and said straight out on Eds forum they are all stroked now for Webster..
as a side note,Andy ran a 76cc and Chris ran a 72cc and were 100's behind him..whatever, old news.
the curious side in me wonders about 54mm pistons and 70mm...in this part of the world.Your the only one bringing up cheater saws.
Easy to figure out just do the bore and stroke.
Also Ej tells what he is trying in 1st post. All you have to do is read. http://chainsawrepair.createaforum.com/ported-work-race/boring/
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This was my 372 52mm bore with stock stroke that was going to go to 2010 Webster. There was a stroked one built at the same time.
(http://i59.photobucket.com/albums/g289/doemaster789/376/CopyofBB365alky001.jpg) (http://s59.photobucket.com/user/doemaster789/media/376/CopyofBB365alky001.jpg.html)
(http://i59.photobucket.com/albums/g289/doemaster789/376/CopyofBB365alky003.jpg) (http://s59.photobucket.com/user/doemaster789/media/376/CopyofBB365alky003.jpg.html)
(http://i59.photobucket.com/albums/g289/doemaster789/376/376001.jpg) (http://s59.photobucket.com/user/doemaster789/media/376/376001.jpg.html)
(http://i59.photobucket.com/albums/g289/doemaster789/376/5.jpg) (http://s59.photobucket.com/user/doemaster789/media/376/5.jpg.html)
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Simon Bertrand is here too. piped 372 of his. http://chainsawrepair.createaforum.com/husqvarna/piped-372/10/
in this video the 372 is standard bored and stroke, with.... 2 ring
most of the show over here are now at 0-81.
In Canada we don't have 5cu stock appearing we generally have 0-80cc which eliminates 181,281's.
All the boys here run 272, some stroked 1 mm most not, all on pipe as the one in Simon's video.The single ring piston is mandatory.
272,371 and now 372 have been a staple here for 20 years. You will hardly find any competitive 460's.
at least 50% of the 272 you will compete again in that class are stroke to 81cc, because they,281 and 272, cut the same time!
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the reason i'm getting them made is for the 272 husky saw that I can still buy brand new. and is one of my favorite saws. kevin that is one nice 365 special saw that is a nice balanced saw too
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still got some pistons left , 52mm, 60 mm and 66 mm, not alot of each but some if anyone needs one , just get a hold of me