itb, that is all.

 

You bumped a super old thread to add a piece of info that's been said?

 

At least someone else is interested. I haven't done much more. Work hasn't been that busy latley, so I haven't had enough spare $$$ to buy the pistons & cams. I have been piddling with small parts like welding fittings onto the valve cover, and machining unused bits off the head. As the racing season gets underway, I'll get back to working on the motor. First things first though, I tore the car up a bit at the last race last year, and need to repair it first.

Eric

 

ITB's, that would be such a sick mod for any N/A.

 

You will easily make 300+whp with the parts you plan on running GLWTB

 

Fred Jr. of SMG Autosports has a drag Cavi with the 2.2 and hes pushin 300+ hes a supporting vendor on here i'd hit him up and ask about his N/A race car build

 

Cool.. I'll look him up. I just need to some OT so I can buy the pistons & get the head ported.

 

Pistons arent too much, who are you going through?

im working towards this myself but the rest of the build had to be put on hold due to some financial and family dynamics....

so far im just around 200whp with mostly stock internals (78lb valve springs, stg 2 cams, & shaved head .020")...so its DEF possible

i plan on getting 11.5:1 or 12:1 comp ratio pistons, bore it out a lil, port and polish cyl head w/ oversized valves, and then add the supporting stuff (balance rotating assembly, remove balance shafts, rods, etc) and hoping to hit 250-275 whp

def possible, just time and money

 

I'm running Alcohol, so I want at least 14.5:1 JE will custom make them for $800. Which seems reasonable to me. They will take a mold from my combustion chamber, and machine the dome to match. Some of the guys on here don't like JE, but since they are the ones GM and Roush are using they will proably work for me.

Keep us posted on how yours goes.

 

JE makes some damn good pistons..

 

not a prob, will do

i talked to wiesco while at sema last year and he quoted me 650ish with wrist pins and rings coated.

 

Best piston for an N/A will be an X forging style
Try to talk to CP Pistons, I know they provided some pistons to GM Racing and do quite a lot of X forgings (aka 'boxed and shaped').

JE are fine too, but often makes slightly heavier pistons than others.

 

I picked up my wisecos for 525 shipped with rings and wrist pins.

 

alanoo, I'll call CP today, thanks.

ralliartist, what was the compression ratio for the ones you got?

 

Let us know what CP will tell you, I'll be very interested if they can do X forgings for our engines

 

I just got stock bore (86mm) and stock compression (9.5:1). But it wouldn't have cost me any extra to get them bigger or higher compression.

 

9.5 so I guess it must be for a boosted engine,
Full round designs for this application at Wiseco, and this is much simplier than a good N/A design

 

simplier? what? you do realize it wouldn't have cost any extra to make it higher compression. I even get pretty big valve reliefs in case I ever find a cam that's worth a ****.

 

Full round designs are by far simplier than slipper ones
Wiseco's low comp are used to be full rounds, high comps are slipper ones

It's not inferior, it's just not for the same application

slipper :



classic full round :


X-forging / boxed and shaped :

 

I should have took pics of the underside of mine. All i got is pics of the top. I'll be sure to grab some pics of the underside when I get back to the states.

In the meantime.....

 

if were posting pistons...then Diamond 9.5:1 coated with Pauter Rods machined to fit the larger wrist pin





Those Xforged pistons tha allanoo posted are what is in the LNF engine...nice design

 

Cool slipper design, already much better than a full round one

 

Its doable. But a cosworth YDX is a drop in 2.3L (Mazda MZR motor.)

http://www.jensenmotorsport.com/car/engine.htm

Also are you planning on doing an ITB setup?

 

yea, but there was one downside to them that I got around fairly easy since I have such an awesome machinest. The oil squirters had to be machined a lot because the new pistons had clearance issues with them. But like I said, my machinest is bad ass and he made it work.