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head shave 

 

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Posted: Sat Nov 15, 2008 8:48 pm 
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macxr8 wrote:
the race series pistons alone give 10.2:1



lol then why does it say on there website they give 9.6?

i just had 40thou off the head and 8thou off the block.
combined 48thou, running with ACL race series and an AU head gasket to give 10.2:1 comp.

no chance the pistons alone rise comp from 9.3 to 10.2
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Posted: Sat Nov 15, 2008 9:40 pm 
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elvondel wrote:
macxr8 wrote:
the race series pistons alone give 10.2:1



lol then why does it say on there website they give 9.6?

i just had 40thou off the head and 8thou off the block.
combined 48thou, running with ACL race series and an AU head gasket to give 10.2:1 comp.

no chance the pistons alone rise comp from 9.3 to 10.2


http://www.aclperformance.com.au/Ford4. ... istons.htm

 

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Posted: Mon Nov 17, 2008 6:56 pm 
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gogetta wrote:
macxr8, what LPG mixer are u running? any pics of engine bay pls??


Am running standard hose to the mixer adaptor, the stock hose, pvc pipe for hose to clamp to , then stock hose and the stock air inlet to air box with the guts cut away for more airflow

 

 

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Posted: Mon Nov 17, 2008 9:10 pm 
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The only problem with shaving the head down 50 thou or greater is you will mess up the fuel bowl and the way it is designed to work. This will cost you power and efficency. I would not consider going over 30 thou. Use a hi comp head gasket too just for that tiny bit extra

 

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Posted: Mon Nov 17, 2008 9:17 pm 
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yeah thats a 200 mixer not a 225...so that makes your power output even better

 

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Posted: Mon Nov 17, 2008 9:40 pm 
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xr6eat 50 wrote:
The only problem with shaving the head down 50 thou or greater is you will mess up the fuel bowl and the way it is designed to work. This will cost you power and efficency. I would not consider going over 30 thou. Use a hi comp head gasket too just for that tiny bit extra






I'd really like to see you explain that theory in some detail.

 

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Posted: Mon Nov 17, 2008 10:07 pm 
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lol

 

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Posted: Tue Nov 18, 2008 6:19 am 
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xr6eat 50 wrote:
The only problem with shaving the head down 50 thou or greater is you will mess up the fuel bowl and the way it is designed to work. This will cost you power and efficency. I would not consider going over 30 thou. Use a hi comp head gasket too just for that tiny bit extra


already running a AU MLS gasket

 

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Posted: Tue Nov 18, 2008 9:28 am 
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xr6eat 50 wrote:
The only problem with shaving the head down 50 thou or greater is you will mess up the fuel bowl and the way it is designed to work. This will cost you power and efficency. I would not consider going over 30 thou. Use a hi comp head gasket too just for that tiny bit extra


tickford_6 wrote:
I'd really like to see you explain that theory in some detail.



xr6eat 50 wrote:
lol


can we sticky this? it explains it perfectly and could be of real use to everyone.

 

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Posted: Tue Nov 18, 2008 11:14 am 
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Ok.... I talkd to two mates of mine and after looking at the head that was there reccomendation to me about shaving it and the effect on the fuel bowl. I am not going to attempt to explain it because it is way to technical for me to even try. One of my mates, Neil, was the head porter for Cragar's v8 supercar program for six years and has built plenty of incredible motors. Those holden followers amungst us or even people with there eyes open at summernats should know two of them at least. CYC 08 the chamelleon twin turbo vt 5.0L and these number plates were previously on his other car witch was a VK sle N/A STREET CAR with a 383Ci stroker running low tens and pushing 680BHP. The other guy who advised me of this is also a former Cragar employee, Keith, he runs several drag cars that he builds motors for and also helps out his boss with midget sprintcar motors. So if it is ok with you i will listen to them. I don't confess to be a expert and by no means d i know everything but i know solid advice when i hear it. So if you want it explained talk to a real experts. Tickfor 6 if you consider your self a real expert and want to attempt to explain it knock your self out!!!!!!!!!

 

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Posted: Sat Nov 22, 2008 11:57 pm 
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macxr8 wrote:
elvondel wrote:
macxr8 wrote:
the race series pistons alone give 10.2:1



lol then why does it say on there website they give 9.6?

i just had 40thou off the head and 8thou off the block.
combined 48thou, running with ACL race series and an AU head gasket to give 10.2:1 comp.

no chance the pistons alone rise comp from 9.3 to 10.2


http://www.aclperformance.com.au/Ford4. ... istons.htm

true for AU. not ef/el.
http://www.aclperformance.com.au/6MKR9400EF.htm
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Posted: Sun Nov 23, 2008 1:12 am 
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elvondel wrote:


macxr8 wrote:
Grimketel wrote:
would 11:1 be out of the question? :twisted:


im running 11.3:1 in a AU engine

 

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