Author Topic: Stihl 084  (Read 12380 times)

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Offline Cut4fun .

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Re: Making stihl 084 muffler
« Reply #240 on: October 26, 2017, 10:30:32 pm »
Phil = If there's enough interest in the cast 084 mufflers I'll start by casting a batch of ten (10), price would be $200- usd each.

Thanks, Phil.

Paper specs and what I said in 2008. = weight of PHO of a MS880 is 22.3LBS flush handle, 084 same PHO 20.7LBS, 088 same PHO 21.8LBS.
I was comparing the MS880 and 084, yes I have lifted and ran both. and could feel the weight difference from the get go. I know after running either for any amount of time the extra weight of the 880 wouldn't matter anyways, but there is a notable bulk of the 880 sitting beside the 084, the 084 seems more streamed lined. I wouldn't kick any of them out of the garage though.

084 20.7LBS 8.6bhp

088 21.8LBS 8.7bhp

MS880 22.3lbs 8.6bhp
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Offline mdavlee .

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Re: Making stihl 084 muffler
« Reply #241 on: October 26, 2017, 10:46:11 pm »
Good price. I bet he's sell them.
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Offline Cut4fun

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Re: Stihl 084
« Reply #242 on: July 19, 2018, 12:02:08 pm »
Merged most of the stihl 084 info into one thread to make it easier to find.

Also saving some old pics of 084's I used to run.


Offline Cut4fun .

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Re: Stihl 084
« Reply #243 on: August 12, 2023, 11:07:38 am »
Just saving some info as Jason porting a 084 for Tom.

084s are notorious for spitting out the flywheel side seal.  Seals need set deep into the case.

The dual keyed flywheel was in the wrong spot after swapping a 1309 coil on it

The red mark represents the flywheel position when running a limited coil. The other slot is for unlimited!


Offline Cut4fun .

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Re: Stihl 084
« Reply #244 on: August 13, 2023, 09:19:26 am »
So much info in thread I forgot about. Was pulling some to ad to chainsaw repair group 084 thread.

Info saved from JJ. Is this right as I dont recall anymore? = The flywheel side seal (9640 003 1600) is the same seal as the PTO side on 024/026/MS-260/MS-361/034/036/MS-360 saws. The PTO side 084 seal (2250) is proprietary to the 084/088/MS-880.

The coil part number 1124-400-1308 is no longer available starting sometime in 2010.
There are three ignition module produced for the 084:
1124-400-1305 Unlimited Ignition Module which requires the Trigger 1118 400 1001 (First Production)
1124-400-1306 Limited Ignition Module (Second Production)
1124-400-1308 Unlimited Ignition Module (Third Production)

flywheel is a 1124 400 1203 dual keyway. The dogleg coil uses the "P" keyway. The 3-bolt coil uses the "B" keyway.
JJ = unlimited ignitions use slot B since the flywheel makes 3/4 of a full rotation before the coil fires after the magnets pass over the lamination.

Most of us dont use but will put here anyway. Stihl 084 part numbers for ignition side oil seal press sleeve is 1124 893 2400, clutch side is 1119 893 2401.

Come across some old info back in 2007 where I was trying to learn the differences in HT 1 2 3 5 7 etc carbs back then.
Now still trying to find my info on which ones had the gov rev limiter type deal inside. ??? Thinking it was 3 and ? Not sure.
me = If you had a choice between putting back Tilly carbs for your bigger stihls.
Which is the better carb to put back and why? HT-1 or HT-7 ? or is the circuitry the same?
Which one of these carbs has better circuity for opening up for more fuel flow or are they the same?
Dennis Cahoon = One thing about the newer HT's, they have a Hi speed jet that's in the way when you want to round slot (T-slot) the fuel area. You can do it but it's annoying to work around. When I have time, I'll take a look at the HT's I have and try to answer you question better. I would go with the HT-1.
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