Throttle Body

Gary57 · Post by **Gary57** » Fri Apr 25, 2008 11:35 am

Max lift and stock lifters is 8.1mm, you need solid lifters if you want to go bigger.

mario_200sx · Post by **mario_200sx** » Fri Apr 25, 2008 11:40 am

Thanks Gary, you 100% sure of that? Soz if sound like a twat! Just want to make 100% sure that the fact I recieve is correct....You understand!

Gary57 · Post by **Gary57** » Fri Apr 25, 2008 12:56 pm

Yes, the DE cam gives 7.8mm lift.

ChemCool · Post by **ChemCool** » Sat Apr 26, 2008 4:03 pm

As I'm such a helpful guy here is a nice alternative, the SR20DE throttle body will also bolt right on, you just need to extend a shaft for the TPS, a mate did this with a pipe and some pratley steel, this gives a nice compromise between the 2,

So Sokar, you telling me that the tps of the sr20 tb, wont do the job for a direct replacement. Is the tps of the sr20 so much different then? To high voltages or what you think? I mean this extension of the shaft sounds like a messy not lekka job.

Chem

mario_200sx · Post by **mario_200sx** » Mon May 05, 2008 1:12 pm

Just to get back at the cam story,

Apparently its not such a good idea to regrind standard ca18det cams....

Any feedback on that?

Gary57 · Post by **Gary57** » Mon May 05, 2008 1:17 pm

Why not??

By regrinding you will only change the duration and not the lift, so you will make more power higher up the rev range.

mario_200sx · Post by **mario_200sx** » Mon May 05, 2008 1:22 pm

thats what I heard....... Not saying its true or not, thats why im asking.

Im stupid when it comes to cams! so by regrinding your cams you cant push up the lift???? If not, there goes my plans!

HancoB · Post by **HancoB** » Mon May 05, 2008 1:51 pm

OK I dont get why you want to increase the lift. The duration is the important factor. The longer the cam opens the more A/F can go into the chambers the more power you will gain...right.

So dont worry about the lift. Anyway some tuners told me the CA18DET cams are good, you cam get alot more power out of them if you just get adjustable cam gears!

mario_200sx · Post by **mario_200sx** » Mon May 05, 2008 1:52 pm

the combi with lift and duration with the cam gears is the ultimate, cams are good but not to the full potential.

Gary57 · Post by **Gary57** » Mon May 05, 2008 2:19 pm

OK I dont get why you want to increase the lift. The duration is the important factor

HAHA, longer duration will make the motor more efficent higher up the rev range, more lift will make the motor more efficent throughout the rev range.

Lift is VERY important, if it wasnt you would be able to by higher lift cams no would you.

You can increase the lift on a cam by regrinding it, but you better trust your machinist.

mario_200sx · Post by **mario_200sx** » Mon May 05, 2008 2:27 pm

ok, thanks gary.... makes sense.

Will get back to you on details!

Doctor G · Post by **Doctor G** » Mon May 05, 2008 3:13 pm

Excuse my ignorance but how can you increase the lift on a cam by regrinding it?

The only way to incrase lift is for the cam lobe to physically have more metal on it to stand up higher than the stock cam.

The regrinding can only alter the duration AFAIK.

@hancoB. Turbo cars don't like overlap, so the rule of thumb is that you don't want massive duration. Lift is prefered.

Mario I say go 270 with 11mm lift. (Oh yeah that's total lift)

Gary57 · Post by **Gary57** » Mon May 05, 2008 3:22 pm

They regrind the journal off center so increasing lift.

I 270 degree cam will be far to much, unless you want to make power from 5500 - 9000.I would say 264degrees will be more than enough if you after top end power. 256 would be a good compromise. Also if you going with cams like these dont forget cam gears hey.

mario_200sx · Post by **mario_200sx** » Mon May 05, 2008 3:36 pm

I thought 8.1mm lift is max?

(Confused!)

HancoB · Post by **HancoB** » Mon May 05, 2008 5:27 pm

Ja I know that...overlap for any car is bad!

What I meant was how can you get more lift from a cam by just grinding it? The height is already set. Thats how I understand it.

And the higher the peak power the more k@k your drive is going to be. I think more power through the rev range is better. Imagine the lag your gonna get from driving a car with high lift cams...to pull away you need to hit 4500rpms...

I like torque!!!