Engine Mechanical Topics Discussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.

Adjusting quench

Thread Tools
 
Search this Thread
 
Old Jul 25, 2017 | 10:53 PM
  #1  
canyoncritter's Avatar
canyoncritter
Thread Starter
|
Cruiser
Joined: Jun 2012
Posts: 157
Likes: 12
From: san diego
Default Adjusting quench

Excuse my ramblings it comes out that way,just checking my thoughts over here.

.045 head gasket, 4 pisces of solder, .060 rolled motor threw, solder measured .050 .050 quench ouch. My head tells me that means I have .005 deck height...

If I throw a .030 head gasket, that should bring me down to a .035 quench ,
030+.005 deck = .035

Would it be worth it to take .005 off the bases of the jugs, for a .030 quench?
 
Reply
Old Jul 26, 2017 | 03:02 AM
  #2  
fidel's Avatar
fidel
Tourer
Joined: Jan 2010
Posts: 296
Likes: 4
Default

put a .027 end at 32
 
Reply
Old Jul 26, 2017 | 03:48 AM
  #3  
Hillsidecycle.com's Avatar
Hillsidecycle.com
Sponsor
Joined: Dec 2007
Posts: 12,084
Likes: 829
Default

The closer you can put the piston to the head, w/o contact during full operating temps, the less chance of detonation, and more chamber turbulence.
.030" keeps things in the safe zone.
Scott
 
Reply
Old Jul 26, 2017 | 04:45 AM
  #4  
canyoncritter's Avatar
canyoncritter
Thread Starter
|
Cruiser
Joined: Jun 2012
Posts: 157
Likes: 12
From: san diego
Default

Scott am I doing my math right so far? Ie need to take .005 off the bottom of the barrels, bring to .030 squish. Or is there a head gasket I can use to bring it down,or not a great ideal.

Not to be stupid question of the day, explain the day, can you explain the operating temp , and 30s the safe spot.
 
Reply
Old Jul 26, 2017 | 05:27 AM
  #5  
Schex's Avatar
Schex
Club Member
15 Year Member
Joined: Apr 2011
Posts: 5,765
Likes: 7,800
From: SE Louisiana
Riders Club Member
Default

"safe zone", has enough room for no piston to head contact when the carbon layer forms on both,
and tight enough to promote turbulence, more complete combustion, and help combat pinging.

At operating temp, dimensions change due to heat expansion.

You'll be OK at .035"
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
northeastconfederate
Exhaust System Topics
14
Jul 14, 2011 06:54 AM
voodoodrug
Touring Models
6
Jul 8, 2010 10:27 AM
largeswine
General Harley Davidson Chat
1
Mar 26, 2009 09:26 PM
iknowyoueazyryder
Ironhead
1
Feb 18, 2008 05:25 PM
jakazz
Exhaust System Topics
4
Jul 2, 2007 10:05 AM




All times are GMT -5. The time now is 03:44 AM.