Increasing Compression: How?

[ViperTony]

As I'm saving up for a possible build one of the options I was considering is staying NA and getting some headwork, cam, pistons, etc. Being a noob at internal engine work...what does increasing the compression actually entail on our Vipers? I assume this is done through pistons and headwork?

P.S. I've read enough posts regarding the warnings about a proper and costly NA build so I'm good, if not tired, reading that advice. Just looking for an answer to the above question.

Thanks,
- Tony

 

[2001 GTS]

With pistons, milling the heads, or just going thinner with the head gasket. How much compression are you thinking of running?

 

[ViperTony]

Actually you're doing what I'd like to do. I was going to have Greg Good do my heads and cam. I see that you're using JE Pistons 11.5:1 compression. Do you have the specs on your pistons? Bore, compression height, wrist pin?

 

[2001 GTS]

Cool man....PM sent!

 

[ViperTony]

Actually, I'm waiting to see how your build turns out. I'm sure its going to be awesome.

 

[1BADGTS]

You have a pm

 

[1BADGTS]

Alot easyier and cheaper to mill the heads than playing with a bottom end .Dont get m wrong lightweight componets ,blueprinting ect on the bottom end will free up power BUT its very costly .

 

[1BADGTS]

Actually you're doing what I'd like to do. I was going to have Greg Good do my heads and cam. I see that you're using JE Pistons 11.5:1 compression. Do you have the specs on your pistons? Bore, compression height, wrist pin?

Tony whatever package you use DONT get sucked into dyno sheet numbers: these heads ,this cam ect.You dont want dyno numbers what you want is a trap speed guarantee on pump gas and stock tires.No matter the CLAIMED POWER NUMBERS they try to sell you on if the car is not trapping 131 mph plus something is wrong.

 

[ViperTony]

You have a pm

LOL...well, there's a surprise! I promise you'll get a call from me before I purchase anything. Just doing homework right now and waiting to see how 2001 GTS's build turns out.

 

[2001 GTS]

Shouldn't have to wait too much longer....

 

[2001 GTS]

Oh yea Tony...

Would not be a bad idea to just do a Greg Good Heads + Nice hydraulic cam setup, Banton is making close to 600rwhp with just "bolt ons". With a slight head shave or thinner head gasket, bumping the compression over 10.0 isn't that hard, and you would not have to tear the bottom end apart.

Just a thought...and to save a good bit of money.

 

[ViperTony]

Oh yea Tony...

Would not be a bad idea to just do a Greg Good Heads + Nice hydraulic cam setup, Banton is making close to 600rwhp with just "bolt ons". With a slight head shave or thinner head gasket, bumping the compression over 10.0 isn't that hard, and you would not have to tear the bottom end apart.

Just a thought...and to save a good bit of money.

Yeah, Greg gave me a good schooling on all this last year. He's definitely getting my heads when I'm ready.

 

[banton]

Oh yea Tony...

Would not be a bad idea to just do a Greg Good Heads + Nice hydraulic cam setup, Banton is making close to 600rwhp with just "bolt ons". With a slight head shave or thinner head gasket, bumping the compression over 10.0 isn't that hard, and you would not have to tear the bottom end apart.

Just a thought...and to save a good bit of money.

Now get yours done already, so we can see what a serious N/A, roller cam'd Viper can do!

 

[2001 GTS]

I'm picking up the hood and bumper from the paint shop this weekend to put back on the car since the motor is in. I'm not going to know what to do with myself once it fires up for the first time.

 

[ViperTony]

Now get yours done already, so we can see what a serious N/A, roller cam'd Viper can do!

I second and third that motion!

 

[2001 GTS]

Nobody wants this car rolling quicker than I do!!!!

 

[Chipster]

How much are Greg Good heads and where to get them? I googled, but don't see a site

 

[ViperTony]

Call Greg Good at 713-290-1103. You can also PM him here, http://forums.viperclub.org/members/greg-good-cylinder-heads.html. It's the best phone call you can make IMO.

 

[plumcrazy]

what tony said

 

[vp97]

ViperTony,
As in other post before, the easy way to get your comp. ratio up is to mill the heads. The correct way to do it would include new flat-top pistons that are .000 -.007 out of the bore. Use a .040 thick gasket and chamber volume of your choice. It works very well! As an example, my pistons are .007 out of the bore, .040 gasket, JM heads with 78cc chambers puts it roughly at 10.2:1

 

[Chipster]

Thanks guys