Max Power NA 7afe ????, Dyno Charts Posted Options

[94celicadude]

Hey all,
I am currently building up my 7afe, i have bought a separate head and have already had new valve guides installed, its been cleaned and i have brand new toyota valves, exhaust and intake, i have had the intake ones machined to have more of the performance "penny on a stick" figure, i will post pics soon but for now here is an example Valves.

I am also going to have the Extrude Hone process ( Extrude Hone ) done to the entire head. The current 7afe in my car has a custom 4-1 headers (Headers), full exhaust, intake, clutch, lightweight flywheel, Apexi S-AFC II, bumped timing to about 14 degrees static timing. If i can find a used GT throttle body i will try to make it work, they seem to be fairly similar. Its been tuned and it has over 225k miles on the original engine. The gear box has been rebuild to brand new, and at last dyno the car was putting just about exactly 100 WHP on a 95 F day.

So i figure its already a healthy working little motor. To make this short, i was wondering who has had the highest NA horsepower out of a 7-afe . I am hoping to be able to build my motor to about 120-130 WHP, that would be ideal but im not sure exactly if i will achieve that goal. The bottom end is going to get first O.S. pistons, the head will be decked for a slightly higher compression ratio, and the entire engine will be blue printed. Then the entire crank assembly will be dynamically balanced with the flywheel and all the accessories on either end of it. Then it will all be put back together and have another tuning session on the dyno.

Now i know that it seems like a lot of money to do everything i am, which it is for only 130 WHP, but im looking to make this a great motor for auto-x. And if i have 200 WHP then ill just create a smoke show, so thats why im not just swapping in something else.

**CLIFF NOTES**

Who has the highest NA power 7afe with dyno numbers to prove it?

This post has been edited by 94celicadude: May 9, 2008 - 5:27 PM

[94celicadude]

I have been contemplating doing the cam regrind, and i mean for anyone who has removed cams on a 7afe its really not hard, so even doing it in the car would be fine.

I think what is going to happen for now is im going to get the engine past its break in period, have it tuned again and see where i stand. I will then talk with Webcams and see if they can truly grind something that would give me the midrange kick that im looking for without pushing my peak power to 5500 rpm.

i REALLY appreciate all the info and input you are all giving me, it is most definitely helping me in achieving my most powerful NA 7afe motor. I did get most of the motor put back together yesterday, i have the head and bottom end all assembled and torqued, i will try to take a few pics. I should hopefully have it all done by the end of the day, depending on how long it takes me to clean up my intake plenum.

Once again thank you all for the input, its a great help. And thanks for the offer to donate some cams, but i have a spare set of stock cams myself, so if i decide to regrind those and they arent what i want, i make take you up on that offer for a donate set in order to try a different regrind.

*runs to garage to finish the motor*

Matt

[Brightside]

Interesting project you have here Matt.

I'm curious if you've done any port matching on the intake/heads/headers (or exhaust manifold) - especially since you had the runners in the heads opened up. It seems like you would want them to match spot-on if you really wanted this engine to breath as well as possible.

How much did you deck the head & block? Did you just deck them to get them true, or did you shave enough to actually change the compression ratio?

This post has been edited by Brightside: Feb 18, 2008 - 1:45 PM

[94celicadude]

Interesting project you have here Matt.

I'm curious if you've done any port matching on the intake/heads/headers (or exhaust manifold) - especially since you had the runners in the heads opened up. It seems like you would want them to match spot-on if you really wanted this engine to breath as well as possible.

How much did you deck the head & block? Did you just deck them to get them true, or did you shave enough to actually change the compression ratio?

Yes, i have not actually gotten to that part but it is in my plans to match the intake and exhaust ports to intake and exhaust manifolds.

The exhaust gasket and headers are actually fairly well matched, but i will touch them up just to make sure they are spot on. I think im going to have to work on the intake side a little more though, i am also going to make sure that the throttle body and intake plenum are all properly matched as well.

the head was decked in order to true it, and the block was decked by about two thousands in order to have it be true as well, so the intent was not to purposely raise the compression ratio even though i know that it did slightly.

My father did all the calculations and the engine will be running a 10:1 compression ratio with the head and block having been decked and the first over sized pistons, which is slightly higher than stock but i dont know exactly how much more it is.

I have gotten all of the engine assembled, all i need to do is finish porting the intake plenum and put the TB and intake manifold back onto the engine and it is ready to go back into the car. I will be putting it back in the car on saturday or sunday.

I will post pictures of my progress during the week.

Matt