How to make an extra 41HP at the wheels, change the turbo!

[Chris 83JA]

I found out a few things, first my map sensor is tuned off the throttle position, not the map sensor. This is bad, secondly my fans aren't working at all and my custom exhaust manifold has a bad leak in it. But I will keep you all posted.

You mean fuel map there?

[Chris 83JA]

What is the Diameter of the Standard Staz T/b ?

the smallest part of the JA throttle body is at the butterfly valve, which is 2".

[Cookiemonster]

My tuner suggested that the cam was really going to hold my setup back. I am running a TR roller cam with manual tappets and although I was turning only 8psi and a 5000rpm rev limit (fresh motor) we could see the graph level out after 4000rpm.

Thus one of the things on my list to do before I go back for a balls out run is a bigger aftermarket cam.

A combination of aftermarket cam and larger turbo exhaust housing removed my 4500rpm power limit.

[cheaterparts]

A combination of aftermarket cam and larger turbo exhaust housing removed my 4500rpm power limit.

your running a camtec grind do you know the spec

I've just ordered a 296 deg 470 lift 112 lobe sep
I think should beath ok to around 7000 ?

what do you think

stephen

[Cookiemonster]

your running a camtec grind do you know the spec

Camtech cam part # 709A-114

Clearance: Intake-010" Exhaust-012"
Duration: 286
Duration @ .050" : 238
Lift @ cam: 319
Lobe seperation: 109

[mrb1]

What is the Diameter of the Standard Staz T/b ?

the smallest part of the JA throttle body is at the butterfly valve, which is 2".

Well that's right but in here on the JB style TBI (same as the 2.6) looks pretty ugly. It looks half blocked up plus lots of sharp edges inside. Die grinder time!

[WidebodyWoody]

I'm just going to change mine to multipoint.

[mrb1]

I'm just going to change mine to multipoint.

Yeh me too but it would be interesting to see how much you could improve it, plus I have this JB TBI to play with. No just put the Magna manifold on......talking to myself here!

[CussCuss]

cookie with that grind how do you find it for pottering around in? you had it in when i was in the car didnt you?

(i was going to goto rpw, but ive been steered away from there so ill just get the adjustable wheel from them)

[Cookiemonster]

cookie with that grind how do you find it for pottering around in? you had it in when i was in the car didnt you?

Yes, it was in the car. But after the car was tuned.. we found the cam was not dialled in correctly. And I still had the standard TC06 at that time.

So since then it has been retuned with a TD06-17C.

At 3000rpm its making around 60 kw atw - so yes a bit sluggish.
By 4000rpm its making around 140kw atw.

So during this 1000rpm range you can really feels the affects of the cam and larger turbo.

Power keeps increasing upto redline (6200rpm) but not as dramatically.

[CussCuss]

from what i can remember, it wasnt particulary lumpy or anything and was fine in traffic wasnt it?

[Cookiemonster]

from what i can remember, it wasnt particulary lumpy or anything and was fine in traffic wasnt it?

Yeah.. it was OK.

[Barney]

nice fat power curve mrb1, how much torque did it make?

[WidebodyWoody]

I think I found one of the reasons for the bad drop in power on my dyno chart. Partly is due to injectors, but the main reason is due to the exhaust manifold having a huge leak in it. When they grinded the welds back, they grinded them too far.

[mrb1]

nice fat power curve mrb1, how much torque did it make?

Don't have the torque print out. Will try and remember to get one next time I drop in there.