I am going to have to flycut!!! :(
Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
Yes it is a check spring. The heads are from TEA. I bought them off a trusted member here last year. When I used the adjustable pushrod I had the dial indicator on it to make sure I didn't pick up any preload or valve lift in this matter.
Last edited by LilJayV10; Jun 11, 2010 at 01:16 PM.
Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
How much can you flycut stock pistons? If these readings are accurate I am going to have to cut atleast .060 off. If I can go more than that I will to be able to mill the heads and up my compression. Does anyone know how many thousands equal 1cc? I am wanting to get around 60-62 to get my compression up.
Oh I hate math!
I am only wanting to do this once and do it the right way.
Oh I hate math!
I am only wanting to do this once and do it the right way.
How much can you flycut stock pistons? If these readings are accurate I am going to have to cut atleast .060 off. If I can go more than that I will to be able to mill the heads and up my compression. Does anyone know how many thousands equal 1cc? I am wanting to get around 60-62 to get my compression up.
Oh I hate math!
I am only wanting to do this once and do it the right way.
Oh I hate math!
I am only wanting to do this once and do it the right way.
I have seen people it as deep as .120 and even spray that setup with a 150 shot...the stock piston is around .240 thick...
I personally cut mine to .110 on both intake and exhaust...
I would recommend at least a .080 cut and bump that compression up...free hp...
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Verdad Gallardo Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
Comp cams. It came with the degree kit. It's only a 180 degree wheel. So after a certain point you have you subtract the number you have from 180. I don't know enough about valve events to figure it out. I think my father in law has one that is 360. Other than that it's a nice piece. I just need to learn how to use it.
Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
yup I have tools that will work for those valves...
as for the 1cc is around .007-.0075" when I cut my heads...so taking off .025 should get you right around where you want to be at 60cc...
I have seen people it as deep as .120 and even spray that setup with a 150 shot...the stock piston is around .240 thick...
I personally cut mine to .110 on both intake and exhaust...
I would recommend at least a .080 cut and bump that compression up...free hp...
as for the 1cc is around .007-.0075" when I cut my heads...so taking off .025 should get you right around where you want to be at 60cc...
I have seen people it as deep as .120 and even spray that setup with a 150 shot...the stock piston is around .240 thick...
I personally cut mine to .110 on both intake and exhaust...
I would recommend at least a .080 cut and bump that compression up...free hp...
Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
I did go through some numbers with Geoff on the phone about the spec's at certain degrees and they were close. He said after I advanced the cam they would be where they should be.
Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
So If I mill the heads .025 to get 60cc
If I cut .100 down that would give me the clearance I need? I know I haven't even measured the exhaust yet. Am I doing the math right? I need to call Geoff Monday and see if he has heard of this and how to verify that cam is what it is.
I don't know how much my pistons are sticking up. They don't "look" but a few thousands if that. What is the compression with a 60cc head and a .051 head gasket?
I don't know how much my pistons are sticking up. They don't "look" but a few thousands if that. What is the compression with a 60cc head and a .051 head gasket?
so if i mill the heads .025 to get 60cc
if i cut .100 down that would give me the clearance i need? I know i haven't even measured the exhaust yet. Am i doing the math right? I need to call geoff monday and see if he has heard of this and how to verify that cam is what it is.
I don't know how much my pistons are sticking up. They don't "look" but a few thousands if that. What is the compression with a 60cc head and a .051 head gasket?
if i cut .100 down that would give me the clearance i need? I know i haven't even measured the exhaust yet. Am i doing the math right? I need to call geoff monday and see if he has heard of this and how to verify that cam is what it is.
I don't know how much my pistons are sticking up. They don't "look" but a few thousands if that. What is the compression with a 60cc head and a .051 head gasket?
Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
I spoke with Geoff again at EPS today.
First thing I want to say his customer service is fantastic. He has talked to me probably a half of dozen times about my car and my setup. I can't say enough about him.
After talking today he said the problem, if you want to label it as that, is TEA drops the valves down which reduces PTV clearance. In no way am I blaming anyone. I think this is great example of why you should check things and not just throw it together when you mix/match parts. I don't think this would be a problem if it was a head cam package from a business.
What's the best way to find out how much the pistons are sticking out of the block? Feeler gauges? Dial indicator, if so how do you do it?
Then I can get the heads shaved, I said shaved, then cut the pistons.
Chris I will be sending you a PM about the tools.
Thanks again for everyone's help and input.
First thing I want to say his customer service is fantastic. He has talked to me probably a half of dozen times about my car and my setup. I can't say enough about him.
After talking today he said the problem, if you want to label it as that, is TEA drops the valves down which reduces PTV clearance. In no way am I blaming anyone. I think this is great example of why you should check things and not just throw it together when you mix/match parts. I don't think this would be a problem if it was a head cam package from a business.
What's the best way to find out how much the pistons are sticking out of the block? Feeler gauges? Dial indicator, if so how do you do it?
Then I can get the heads shaved, I said shaved, then cut the pistons.
Chris I will be sending you a PM about the tools.
Thanks again for everyone's help and input.
one option is to send the heads to TEA and have them set the valves in deeper then maybe have the heads shaved to get the compression you're looking for.
The only other option is flycut.
If the deck has never been milled I'm sure someone here has the info on how much the piston is out of the block.
The only other option is flycut.
If the deck has never been milled I'm sure someone here has the info on how much the piston is out of the block.
Thread Starter
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
I dropped the heads off at the machine shop today. I told them I wanted them cut down to 59cc. Afterward I thought if TEA sits the valve that much lower will that effect how much can be milled off the heads.
I guess I will find out.
I guess I will find out.
Becareful man that much compression with an early ivc will make your dynamic compression ratio real high. If its over 8.8:1 good luck on pump gas. I wouldn't run much over 11:1 with that size cam.