Project 3400 Roller Cam Block (Page 21/82)
lou_dias MAY 15, 02:50 PM

quote
Originally posted by Will:
Same tune between the two setups?

What did your AFR's originally look like?


No, not the same tune at all. Page 3 contains my orignal dyno with the Fiero setup.

**** , at this point, I'm considering dawg-modding the old Fiero intake I had on there before just to see what happens...

I can send the drf file to anyone who wants it.

[This message has been edited by lou_dias (edited 05-15-2012).]

joshua riedl MAY 15, 08:59 PM
Is that a common issue with that intake? have you ever thought about DIS since you already have the 3400 block? Darths going to retune it anyway.

[This message has been edited by joshua riedl (edited 05-15-2012).]

lou_dias MAY 16, 11:08 AM
I'm using DIS right now. I converted from Fiero ECM and intake to DIS w/'7730 + Trueleo intake.

[This message has been edited by lou_dias (edited 05-16-2012).]

joshua riedl MAY 17, 06:28 AM
I didn't catch that. Can you still put a timing light on it? It's hard to imagine the intake manifold did that. The cam is good for at least 185hp and I'm pretty sure you have headers already. Keeep your head up. First time I dyno's my 3900 it was exactly the same as my old 3400.
neophile_17 MAY 17, 09:42 AM
I'm surprised no else has brought this up. Comparing results between different Dynos is basically useless. Certain types of Dyno are known to read high, I think Mustang is known for this. Even the same type of Dyno can read different although the variance should be smaller. Hot Rod did an article where they had the same car Dynoed at several shops on the same day. See:

http://www.hotrod.com/techa...testing/viewall.html

There are also different standards for how hp is measured. I'd think that tuning would definitely bring your numbers up too. Good luck.

~sam
lou_dias MAY 17, 10:14 AM
I could totally see a lot of my lost power returning just from changing 10:1 to 12:1.
I have spoke with 2 different professional tuners and they all tune non-boosted cars to 13:1 yet the tuner I've been dealing with seems to idolize a philosophy of richer is better. I'm done with that. If you have to run richer to not blow up, then you need better parts that won't blow up, not a "safer" tune. All tunes should be for performance. WOT is for performance. If a part fails, the tune does not matter. All a richer tune does is put more fuel in your oil and ruin your bearings and cost you more money.
lou_dias MAY 17, 10:25 AM

quote
Originally posted by lou_dias:

I could totally see a lot of my lost power returning just from changing 10:1 to 12:1.
I have spoke with 2 different professional tuners and they all tune non-boosted cars to 13:1 yet the tuner I've been dealing with seems to idolize a philosophy of richer is better. I'm done with that. If you have to run richer to not blow up, then you need better parts that won't blow up, not a "safer" tune. All tunes should be for performance. WOT is for performance. If a part fails, the tune does not matter. All a richer tune does is put more fuel in your oil and ruin your bearings and cost you more money.



Oh and my ass-o-meter also tells me the torque is not there. My 4.9 dynoed at 172/265 at this shop and this car used to feel superior in hp and close in tq but definitely does not now...and this dyno shows it.
Joseph Upson MAY 17, 05:57 PM

quote
Originally posted by lou_dias:

I could totally see a lot of my lost power returning just from changing 10:1 to 12:1.
I have spoke with 2 different professional tuners and they all tune non-boosted cars to 13:1 yet the tuner I've been dealing with seems to idolize a philosophy of richer is better. I'm done with that. If you have to run richer to not blow up, then you need better parts that won't blow up, not a "safer" tune. All tunes should be for performance. WOT is for performance. If a part fails, the tune does not matter. All a richer tune does is put more fuel in your oil and ruin your bearings and cost you more money.



I've never read anything suggesting less than 12:1 AFR on a naturally aspirated engine and some boosted street cars are run as high as 12.5:1 with moderate boost, going lower as the boost pressure increases towards double digits where things get hotter and experience more stress.
jdv MAY 17, 08:14 PM
Have you hooked up tunerpro to see what the setting are you don't have to change anything just get an idea what might be wrong.Take some logs so when you get the chip burned Ryan has more info to go off of. Maybe post some up here and someone can give some insight.
lou_dias MAY 23, 11:15 AM
Well, driving last night, something in the rear driver's side wheel bearing or axle failed. Enough frictional heat was generated to melt the inner part of the wheel-well cover. I wonder if this friction was present during the dyno... This will be the 3rd time that this area has failed. Part of the problem my be the clearance issues with the axle and the HELD bump-steer correctional control arm...