Who to go for SOHC Head Porting ??

[flav]

About $50 in a red light district.

[Junkers]

Didn't see that one coming :roll:

[flav]

Simple port Jobs are about $300-$500 depending on where you go, but thats a base price for port match and clean up of the port and valve guide area.

[Barney]

ADS Engine reconditioning in Perth did mine. They have their own flow bench ect. They are in Myaree Perth 08 9330 5200 ask for Aaron.

Aaron also fitted the Crow Cam and adjustable cam gear and of course the Double valve springs :D They also re-shaped the valves

ASH

[Junkers]

How much did it cost you for the cam install barney?

[Barney]

Not much as I sponsor his 6 second drag car, so it was parts only.
The cost of the flow bench time would have been heaps, they did a dummy port on an old head first!

Estimate over $1000,00 I can ask him how much he would charge if you like?

ASH

[quest]

Barney, sounds like you had some quality work done to your sohc.
Did you ever "push" that setup, to see what it'll do ?

[Barney]

Barney, sounds like you had some quality work done to your sohc.
Did you ever "push" that setup, to see what it'll do ?

240 rwph & 1150 ftlp torque @ rear wheels (Dyno dynamics shootout) on standard bottom end. Could have got more but didn't want to get up it to much with stock pistons.

ASH

[Junkers]

240 rwhp on a stock bottom end :o

Hey barney, I was curious at how much a cam would cost to get installed, don't think I'm that keen for porting however. I also hear the stock ecu doesn't like custom cams too much.

[logik]

sorry to dig up such an old post... why do people quote torque in foot pounds?

it doesnt mean anything and dyno dynamics can measure in Nm...

anyone got a working conversion formula? when i say working, you type in a foot pound figure and get a LOWER number for Nm...

[coop1er]

What do you mean it doesnt mean anything, it is as valid as using hp
as a measure of power.

Anyway, 1 ft-lb = 1.356 nm.

[logik]

1150 x 1.356 = 1559.4Nm

right

nothing against barneys car, in fact i like how he managed 240hp on stock internals (craziness!!) but it did not make 1559Nm of torque

i had this EXACT argument with my mate after he got 208rwhp in an aw11 mr2 (4agte with t25) - he got quoted some insane tractive effort number and after converting it to Nm using the above formula - the bragging rights he thought he had were enormous...

using kw and hp to measure engine power output is useful, foot pounds (tractive effort) however is not.

on the other hand, this posts actual focus - i am going to the head shop in 2-3 hours to sort out stuff - the guy wants to know the best areas to target on a starion head (ie port work)

[SpidersWeb]

I'm going to take a gamble and say that was the raw torque measured by the dynometer, not the calculated engine torque. e.g. its been altered by gear ratios. The dyno measures the torque, then using other sensors it calculates backwards to give you the pretty figures.

I think the 1150ftlb quote is actually the torque at the wheel, not the torque at the engine. The wheel would not have been spinning at 6000rpm.

This would be the difference between engine torque and tractive effort.

[logik]

truth

perhaps if you divide 1559 by the final drive (diff) you'd get the proper Nm

1559 divided by 3.545 equals 439.7 which sounds very reasonable as a torque readout at the wheels

perhaps you also need to get the gear you did the power run in, into that equation as well?

[Junkers]

I made the calculation of lb-ft to Nm off a dyno sheet a couple days back and bumped into a similar unrealistic answer, I'd agree with spiders theory.

If you ever have trouble converting units here's a good site I found http://www.shinano.com/xampp/skvconv.swf