Notices
Glow Engines Discuss RC glow engines

Head Gaskets (needed or not)

Old 05-10-2020, 01:12 PM
  #1  
meowy84
Thread Starter
 
Join Date: Oct 2004
Location: , IN
Posts: 1,060
Received 2 Likes on 2 Posts
Default Head Gaskets (needed or not)

While on ebay I stumbled across head gaskets being sold for several engines (new and old) that I wasn't aware came with head gaskets from the factory in the first place. As an example, these include older/vintage engines such as the Veco .19 or the Enya 15-III and also many other newer engines which don't specify a head gasket. https://www.ebay.com/itm/Aftermarket...UAAOSwPbBc2ake I happen to have NIB examples of the Veco .19 and Enya .15 and neither of them have head gaskets from the factory.

What gives? These can't be performance enhancers since they would (albeit ever so slightly) lower the overall compression ratio . And with clean mating surfaces and proper torque spread among the head bolts leaks aren't usually a big concern. So are these to be looked at as "just in case" gaskets to prevent head leaks?

Signed: dazed and confused
Old 05-10-2020, 04:05 PM
  #2  
GREG DOE
 
Join Date: Jul 2005
Location: , TN
Posts: 705
Likes: 0
Received 2 Likes on 2 Posts
Default

Some people will lower the head by turning the head, or sleeve down, and then shim it back to there preferred head clearance.
Old 05-11-2020, 08:48 AM
  #3  
meowy84
Thread Starter
 
Join Date: Oct 2004
Location: , IN
Posts: 1,060
Received 2 Likes on 2 Posts
Default

Greg, that's true but wouldn't that be better done with metal shims and not paper gaskets. I just don't see how a compressible paper gasket that only comes in one thickness would be suitable for reliably adjusting compression or head clearance. Non-compressible metal shims in different thicknesses (.005, .010 etc) would be better for that task no?
Old 05-11-2020, 09:45 PM
  #4  
GREG DOE
 
Join Date: Jul 2005
Location: , TN
Posts: 705
Likes: 0
Received 2 Likes on 2 Posts
Default

Yes,today's technology would use metal shims. Engines built 40+ years ago had composition gaskets. Many of the engines I ran in the 60's 70's and early 80's had composition gaskets. K&B (Green Heads) McCoy (Red Heads) Fox's and a lot of other brands used composition gaskets. Production sport engines back then had broad tolerances, so thick compressible gaskets were common practice.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.