quench question
Registered User
Joined: Jan 2006
Posts: 217
Re: quench question
Originally Posted by firebirdStud
well, I email jeff creech, and he said leave the pistons .007 in the hole, that would give me .034 quench, which shouldn't be a problem. or .009 in the hole would give me .036 quench. But, would lower my compression to 11.16:1 
I think I may go for .007 in the hole, what do you think?
I think I may go for .007 in the hole, what do you think?
Registered User
Joined: Apr 2002
Posts: 126
From: San Diego, Ca, USA
Re: quench question
Originally Posted by 97WS6NY
I am not saying anything, but if it was me I would zero deck and run a 1074, simple.
Thread Starter
Registered User
Joined: May 2005
Posts: 2,161
From: Colorado
Re: quench question
Well, I appreciate the help. Im thinkin .034 is right in the middle of everything, so I like to walk the line a bit, so I may shoot for .007 in the hole, and the .027 cometic. The machine shop is puttin the parts in to measure it all, then cutting the block. they actually wouldn't deck the block until I brought them the pistons and rods. Looks to me like they know what they are doin after reading some of these posts! 
THANKS!
THANKS!
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Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: quench question
Originally Posted by firebirdStud
wow A/G, very interesting. Now I am glad I backed it off a hair, to .034. We will see what happens when I get her together and start drivin it!
The tighter the quench the better off ya are and don't care what anybody says.
The quinch distance depends on the rod and RPM's and piston fit. .035 is as close as I have run on the street, and they DON'T touch the head at 7800(bet they are close,judging from the burn pattern)
I would NOT run less than .035 on a street motor,a trailer queen is different.
Last edited by 1racerdude; Apr 15, 2006 at 09:47 PM.
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Joined: Dec 1969
Posts: 10,745
From: Buffalo, New York
Re: quench question
Zero deck with a 0.039" gasket is a very common and acceptable way to do it. I doubt it's worth the effort to make it any tighter. But that is just a "feeling" not based on any hard data.
Rich
Rich
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Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: quench question
Originally Posted by A/G
Ya, ya, ya. Some choose to believe in unsubstantiated myths, and it can be easy to fall into that
rut. Also, yOU admit to going only so close, then foolishly suggest that as the limit. Y(ou) admit not
knowing how close yOU can actually get, yet willing to make a blind bet. I don't have to make foolish
bets. As I stated, I HAVE run closer, and it wasn't with tight fitting cast pistons. After that, I'm still
not arrogant enuf to claim to know the limit. Also, if anything, a 'trailer queen' should run a looser clearance.
As far as burn pattern, from what I've seen, most do not know how to read 'burn patterns'. By that,
I mean they read them backwards. Based on articles they've written, I've seen well renouned and
respected authors do it. It also appears to be universal. Others and yOU read it from someone well
known, and blindly accept it as gospel.
rut. Also, yOU admit to going only so close, then foolishly suggest that as the limit. Y(ou) admit not
knowing how close yOU can actually get, yet willing to make a blind bet. I don't have to make foolish
bets. As I stated, I HAVE run closer, and it wasn't with tight fitting cast pistons. After that, I'm still
not arrogant enuf to claim to know the limit. Also, if anything, a 'trailer queen' should run a looser clearance.
As far as burn pattern, from what I've seen, most do not know how to read 'burn patterns'. By that,
I mean they read them backwards. Based on articles they've written, I've seen well renouned and
respected authors do it. It also appears to be universal. Others and yOU read it from someone well
known, and blindly accept it as gospel.
Combustion is NOT unsubstantiated.Might want to do some research on moving all the mixture to the smallest area.
I did read the pattern and had EXPERT conformation on my findings.
Whenever ya see the outline of the piston on the head quench area with NO indentions,it's pretty damn close.
People run all kind of mixed up set ups and they work. I wonder about their measuring ability and what they use to measure with. A yard stick won't get it done.
Last edited by 1racerdude; Apr 15, 2006 at 11:22 PM.
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Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: quench question
Originally Posted by A/G
'Expert' is just another word in the dictionary. I've seen 'expects' give 'expert' testimony in court. Expert, reminds me of the word 'professional'. Both can be abused adjectives.
FFT, if the 'experts' had all the answers, some of the engineers on race teams could seek new employment. As it is, they are still on the job, aren't they?
FFT, if the 'experts' had all the answers, some of the engineers on race teams could seek new employment. As it is, they are still on the job, aren't they?
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: quench question
Originally Posted by A/G
Tough time making up your mind? Slice? LOL. What are you, a chef or engine builder? Since when are you one to accept my input, even when it is based on knowledge gained from experience? Are you gonna tell me those pistons and heads are from YOUR engine?
What about the burn pattern?
Explain what the slice is?
Let's here about that experience.
Last edited by 1racerdude; Apr 16, 2006 at 11:48 AM.
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Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: quench question
Originally Posted by firebirdStud
hrm, what is that slice? a purn pattern enhancer?
It has to do with moving the mixture to the plug. Getting all the mixture in a smaller area and out of the confines of the quinch for a better burn. They go to all this trouble to get the burn right,what does that tell ya about the quench area.It tells me that the tighter it is the more the mixture is squished to a smaller area closer to the plug for a quicker and better burn.
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: quench question
Originally Posted by A/G
It should be no big secret I don't like you, nor your attitude. The big loser? This forum. Maybe time for a moderator to step in.Rather than screw up the explanation, which you have done a good job at, just give the guy a link to the source. BTW, the pics you posted are familiar to me. I posed the question to see whether you would step in your own doo-doo.
I didn't sit back and say I knew and that's all.
Well,give us YOUR explanation if I screwed it up,about the slice,slit,cut or whatever.
Those pictures ya probably haven't seen before.
Didn't realize I was in any kind of popularity contest with you as judge.
Last edited by 1racerdude; Apr 16, 2006 at 01:35 PM.