Toyota MR2 Message Board - View Single Post

CpuZapper · 08-19-2006, 09:59 PM

Here's a mixed response from this post, and your PM.

If you're running boost, don't use the TRD cams, they are for NA application. You want a cam with as little overlap as possible, and TedComponents up in Canada has just the part I think you need. He can also build you a port and polished head and machine it to fit the cams for a pretty decent price, completely shimmed and ready to be dropped on.

From TedComponents site:

Supercharged/Turbo Applications
15-20HP gain
1: KK294: 8.2mm/244 duration

**30-60HP+ gain
Machining to clear camshaft lobe and alternate valve spring required
2: KK108: 10.35mm/10mm/264/258 duration
3: KK108B: 10.7mm/262 duration
Cost- $650.00 Cdn

Also, the VF30 turbo should be ok for most stuff, but I'm definately a fan of the T3 platform for their many choices of housings, wheels, and internals. My favorite turbo for the 4age is still the T3 Super .60/.63 (Cold/Hot) for both decent spool, and some rocking top end. This turbo should support upwards of 300hp. If you really want low end, and are ok with some drop off at max revs, get a T3 .42/.48. I like it because it will produce more boost than a T2x series, and do it for longer. They are also really easy to find cheap rebuilt units, or even cheaper in the junkyard. I'd rather spend $2000 on 10 turbochargers, than on just one.

Also, I believe TRD had Carillo make their H beam rods but I could be wrong. Paradise Racing has Carillo Chromoly I beam rods which are pretty darn good, but they'll cost you a pretty penny. Occasionally, Formula Atlantic rods will come by which should also hold the power pretty well, and both should give you a little more flexibility in your final rev limit. I'd like to see some pics of your setup as it sounds pretty close to the new one I'm planning, with a few changes. Also, an external waste gate will give you a little more precise boost control, and since it is not in the exhaust housing, you won't have to worry as much about cracking the casting, however you do still have to make sure they don't cook, and destroy the diaphragm inside (though it takes a lot to do so).

08-19-2006, 09:59 PM	#2 (permalink)
CpuZapper RallyRacer Join Date: Mar 2005 Location: Portland, OR Posts: 482 Thanks: 7 Thanked 25 Times in 22 Posts My Google Map iTrader Rating: (1/100% )	Here's a mixed response from this post, and your PM. If you're running boost, don't use the TRD cams, they are for NA application. You want a cam with as little overlap as possible, and TedComponents up in Canada has just the part I think you need. He can also build you a port and polished head and machine it to fit the cams for a pretty decent price, completely shimmed and ready to be dropped on. From TedComponents site: Supercharged/Turbo Applications 15-20HP gain 1: KK294: 8.2mm/244 duration **30-60HP+ gain Machining to clear camshaft lobe and alternate valve spring required 2: KK108: 10.35mm/10mm/264/258 duration 3: KK108B: 10.7mm/262 duration Cost- $650.00 Cdn Also, the VF30 turbo should be ok for most stuff, but I'm definately a fan of the T3 platform for their many choices of housings, wheels, and internals. My favorite turbo for the 4age is still the T3 Super .60/.63 (Cold/Hot) for both decent spool, and some rocking top end. This turbo should support upwards of 300hp. If you really want low end, and are ok with some drop off at max revs, get a T3 .42/.48. I like it because it will produce more boost than a T2x series, and do it for longer. They are also really easy to find cheap rebuilt units, or even cheaper in the junkyard. I'd rather spend $2000 on 10 turbochargers, than on just one. Also, I believe TRD had Carillo make their H beam rods but I could be wrong. Paradise Racing has Carillo Chromoly I beam rods which are pretty darn good, but they'll cost you a pretty penny. Occasionally, Formula Atlantic rods will come by which should also hold the power pretty well, and both should give you a little more flexibility in your final rev limit. I'd like to see some pics of your setup as it sounds pretty close to the new one I'm planning, with a few changes. Also, an external waste gate will give you a little more precise boost control, and since it is not in the exhaust housing, you won't have to worry as much about cracking the casting, however you do still have to make sure they don't cook, and destroy the diaphragm inside (though it takes a lot to do so).