combustion chamber softening

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combustion chamber softening

Post  10SHOTS on May 8th 2015, 2:54 pm

I have spoke with 3 different company's that does this , one does a 3 degree cut , one a 7 degree And the other a 10 degree , what degree cut do you nitrous guys use ?
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Re: combustion chamber softening

Post  Lem Evans on May 8th 2015, 9:17 pm

Did they ask what cylinder head you have?

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Re: combustion chamber softening

Post  richter69 on May 8th 2015, 10:53 pm

No cut.... That .110 quench tho.....
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Re: combustion chamber softening

Post  10SHOTS on May 9th 2015, 1:27 pm


Lem Evans wrote:Did they ask what cylinder head you have?

yes sir
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Re: combustion chamber softening

Post  Larry T on May 9th 2015, 2:55 pm

talk with charlie buck of buck racing.
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Re: combustion chamber softening

Post  10SHOTS on May 9th 2015, 4:12 pm

Larry T wrote:talk with charlie buck of buck racing.
I did , $800 v/s everyone else's $300 ,
I talked to BES , champion performance , fast forward and RFD Curtis Boggs
bes does the 3 , champion and RFD does the 7 and fast forward race engines does the 10
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Re: combustion chamber softening

Post  Lem Evans on May 9th 2015, 5:21 pm

10SHOTS wrote:
Lem Evans wrote:Did they ask what cylinder head you have?

yes sir

I was wondering.....do they use different angles depending on head style or is it a one size fits all kind of deal?

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Re: combustion chamber softening

Post  10SHOTS on May 9th 2015, 5:45 pm

[quote="Lem Evans"]
10SHOTS wrote:
Lem Evans wrote:Did they ask what cylinder head you have?

yes sir

I was wondering.....do they use different angles depending on head style  or is it a one size fits all kind of deal?[/quote

the way I understood it was they won't to leave a .200 quench pad from the bore size . how deep they go before with the cut I don't know
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Re: combustion chamber softening

Post  10SHOTS on May 9th 2015, 5:47 pm

fast forward told me that on a 3 degree the next mill job would probably cut that out and that the 10 degree is more affective
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Re: combustion chamber softening

Post  10SHOTS on May 9th 2015, 5:51 pm

I failed to ask if it would even be worth doing on a 350 to 400 shot , a lot of stuff I read people are doing this on multiple kits to help the engine live
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Re: combustion chamber softening

Post  Lem Evans on May 9th 2015, 6:25 pm

10SHOTS wrote:
Lem Evans wrote:
10SHOTS wrote:
Lem Evans wrote:Did they ask what cylinder head you have?

yes sir

I was wondering.....do they use different angles depending on head style  or is it a one size fits all kind of deal?[/quote

the way I understood it was they won't to leave a .200 quench pad from the bore size . how deep they go before with the cut I don't know

One degree doesn't take but .0175" per inch. So, starting .200" off the bore and going but 3* would not get one much on a chamber like the SCJ deal on the right.


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Re: combustion chamber softening

Post  Curt on May 9th 2015, 9:14 pm

Lem, you're getting soft chambered in your old age.
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Re: combustion chamber softening

Post  Lem Evans on May 9th 2015, 10:38 pm

Curt wrote:Lem, you're getting soft chambered in your old age.

Naw....I'd just jack the piston down in the hole scratch

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Re: combustion chamber softening

Post  Larry T on May 10th 2015, 10:16 am

yes the 3* cut is a waste of money with the big shots of nos.the 10* or bowl cut is what most use in combonation of droping the piston in the hole for the big nos shots.
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Re: combustion chamber softening

Post  10SHOTS on May 10th 2015, 10:50 am

Larry T wrote:yes the 3* cut is a waste of money with the big shots of nos.the 10* or bowl cut is what most use in combonation of droping the piston in the hole for the big nos shots.

what's considered big shots ?
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Re: combustion chamber softening

Post  Larry T on May 10th 2015, 11:17 am

Wink above 3-400 shot
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Re: combustion chamber softening

Post  10SHOTS on November 29th 2015, 12:19 pm

got Another piston last night , buying Pistons is getting old ,
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Re: combustion chamber softening

Post  kim on November 29th 2015, 12:57 pm

race gas is a little cheaper than aluminum. Might want to add a little fuel.

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