HELP! Big cylinder bolt spacing measurements

[Shane¹]

Anyone have any of the big cylinders laying around for some bolt spacing measurements I am planning a potential hybrid mission but need some info on where to start on a cylinder. I am thinking if anyone has 084, 088, 3120, or even an 066 or 395 cylinder laying around those would be my first options. If anyone knows of any other bigger cylinders let me know of those too. Maybe even a 390xp

 

[Powerstroke Cowboy]

I've got a 660 and 880 I can grab spacing off of.

 

[Shane¹]

I've got a 660 and 880 I can grab spacing off of.

Nice thanks!

 

[Powerstroke Cowboy]

Nice thanks!

Stihl ms660 base bolt pattern, dimensions pulled from a cylinder.



I thought I had an extra 880 base gasket laying around, but I don't. I'd have to pull the cylinder off the 880 to grab dimensions. Sorry about that.

Edit, changed wording to make it easier to find for anyone searching the web for the dimensions.

 

[Shane¹]

660 base bolt pattern pulled from a cylinder.

View attachment 413821

I thought I had an extra 880 base gasket laying around, but I don't. I'd have to pull the cylinder off the 880 to grab dimensions. Sorry about that.

Thank you very much don't worry about the 880 i am sure someone will have an 880 cylinder kicking around

 

[Shane¹]

Anyone have an 088 or 084 cylinder kicking around they could measure for me those two are the ones I am curious about the most

 

[Powerstroke Cowboy]

Anyone have an 088 or 084 cylinder kicking around they could measure for me those two are the ones I am curious about the most

Don't make me feel bad! I'd like to see the 395s dimensions as well.

 

[Shane¹]

Don't make me feel bad! I'd like to see the 395s dimensions as well.

I actually found a 395 base gasket I will send you measurements when I get a second. What are you thinking about trying to put the 395 cylinder on?

 

[Powerstroke Cowboy]

I actually found a 395 base gasket I will send you measurements when I get a second. What are you thinking about trying to put the 395 cylinder on?

That would be great! Thank you! A 6400.... LOL

 

[Shane¹]

That would be great! Thank you! A 6400.... LOL

I think @Ketchup might have already tried with not a lot of success but I am not for sure but I will measure that gasket when I get a second

 

[Ketchup]

395 is a square 56mm (pto to Fw) x 54mm (int to ex), but the deck height is much lower on a 395 compared to a 6400. 10mm or more lower. No go.

 

[Ketchup]

390 bolt pattern:



But…

 

[Shane¹]

390 bolt pattern:

View attachment 414340View attachment 414341View attachment 414342

But…

View attachment 414343

I am trying to find options for 9000 not 7900 though so one of those may work for me

 

[Powerstroke Cowboy]

395 is a square 56mm (pto to Fw) x 54mm (int to ex), but the deck height is much lower on a 395 compared to a 6400. 10mm or more lower. No go.

That pretty much awnsers that question. Thank you!

 

[Powerstroke Cowboy]

I am trying to find options for 9000 not 7900 though so one of those may work for me

I'm also 0n the lookout for an option for a 9000 as well. I do think an 880 will work with lots of modifications on the case.

@srcarr52 has put a 58mm 395 on a 9000.

 

[Ketchup]

I am trying to find options for 9000 not 7900 though so one of those may work for me

Deck height will determine a lot. The 390 is so wide that I haven’t seen anything it will fit. Never been into a 9000 though.

 

[Shane¹]

The 395 I heard was a lot of work same with 084 and 088 just wonder which one might be better but then solid runner could be just 066 would be a pretty good bump in displacement

 

[srcarr52]

The 395 I heard was a lot of work same with 084 and 088 just wonder which one might be better but then solid runner could be just 066 would be a pretty good bump in displacement

I had to deck the case 0.100" to get the 395 cylinder to work as I didn't want the mounting flange to get too thin.

 

[Ketchup]

2100 could also be considered.

 

[mgr1]

Echo 1201, does anyone have the stud spacing from this cylinder?