squish clearance  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> squish clearance
Page: [1]

Login
Message << Older Topic   Newer Topic >>
squish clearance - 12/27/2004 3:14:56 AM   
airbornrc


 

Posts: 166
Joined: 2/13/2003
From: olympia, WA, USA
Status: offline 		What squish clearance do you suggest for the sj 120?

Mark

_____________________________

Mark Anderson
       Post #: 1

RE: squish clearance - 12/30/2004 6:58:55 PM   
bob27s



Posts: 4833
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: online 		Hi Mark........

sorry for the delay in my reply.

Just want to clarify....... you want the head clearance for a SJ-120 or for a 120 Lite ??

I will have to double check with Dub for both. But I seem to recall my SJ120 was set about .025.

Let me confirm the correct setup.

Bob

< Message edited by bob27s -- 12/30/2004 7:42:05 PM >


_____________________________

Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to airbornrc)
       Post #: 2

RE: squish clearance - 12/30/2004 7:44:01 PM   
bob27s



Posts: 4833
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: online 		Ok....... I wasnt far off.

Dub sets the SJ-120 engines typically at .030" as they are shipped. They run very well there.

I was wondering what initiated your post ? Are you reassembling the engine ? Or do you have a performance issue you are trying to correct ?

Bob


_____________________________

Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to bob27s)
       Post #: 3

RE: squish clearance - 12/31/2004 10:45:31 PM   
airbornrc


 

Posts: 166
Joined: 2/13/2003
From: olympia, WA, USA
Status: offline 		Bob
Actually I am working with another manufacturers engine and could not get any specs out of them. You guys are very much the performance builders out there so thought I would find out what you set your motors up at. The motor in question is at .045 with no shims. Throttles poorly and shows signs of detonation on the piston. I want to get the squish clearance in the right area then play with the combustion volume. My background is in water cooled .45 motors and was not sure how much clearance these big motors needed.

Thanks
Mark

_____________________________

Mark Anderson

(in reply to bob27s)
       Post #: 4

RE: squish clearance - 1/3/2005 1:56:39 PM   
bob27s



Posts: 4833
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: online 		Hi Mark......

sounds like you have a handful there. Glad I could be of some help.

Bob


_____________________________

Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to airbornrc)
       Post #: 5

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> squish clearance
Page: [1]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.469RCU1