250 WHP Supernatural 3.4 Build (Page 42/47)
La fiera DEC 26, 10:43 PM

quote
Originally posted by claude dalpe:

Just to clarify my point for the Idle roughness.

I said: And for finish your 3.4 since you converted it to the E85 I really don't like is rough Idle:
You replied: The Idle roughness is not because of the E85, its because of the aggresiveness of the camshaft. Here where I live in the south they call that Lickin '!

I watched the 2 videos again: https://youtu.be/qaDRamsYUtY
You are going to the dyno session and your Idle is really sweeter than on the other video: https://youtu.be/CUCOC4cxjo8

Did you change anything other than the coil pack and the E85 between the 2 videos.

In the future can you explain more your session of tuning please I'd appreciate lot's.




Thanks for the advice Claude! I'll take that into consideration in future videos!
You have a PM!
Will DEC 27, 09:33 AM

quote
Originally posted by La fiera:


Yep you are right Will but that test was Dynojet sponsored. But to get that out of the way I took my 2.8 to both dynos and look what happened.

https://cimg2.ibsrv.net/gim...496fdba01a8ae897.png
Dynojet dyno

https://cimg8.ibsrv.net/gim...33657a56c6539b6f.jpg
Mustang dyno

Exactly the same!

But like you said, I use dynos as a tool to measure my improvements not to brag.
I use the comparison with your N* as a reference of what an individual can achieve with any engine.
I know that if you make yours as radical as mine you'll be in almost at the 500WHP N/A because it has the hardware to achieve that.
Through your build I've admired the skills you have to make parts. For example, I don't have the machinery or the knowledge to
make a Quater Master clutch set fit in my engine (my dream) but I know that's beyond me, and you did it and I admire that.

So what I'm trying to say is that if you felt that I was putting you down in any way by comparing my engine to yours that was not the case.
And if you felt that way I owe you an apology, you are my best critic!
I'm looking forward to see your N* on the dragstrip and not brake more axles like me!



Ok, I know you're crazy, but didn't quite think you were crazy in the way of comparing a 3.4 to a Northstar. Thanks! I enjoy being a critic

I don't doubt that a Mustang dyno can be made to match a DynoJet chart... but who actually takes the time to dial in the variables to do that? Motor Trend's C8 Corvette dyno shows how easy it is to screw up with a Mustang, even though other vehicles run that same day had more realistic results.

I'll sell you a flywheel once I get my fitment figured out

With all your lightweighting effort, I'm a little surprised you haven't picked up one of these:

https://www.ebay.com/itm/163924555048

[This message has been edited by Will (edited 12-27-2019).]

m0sh_man DEC 27, 01:25 PM

quote
Originally posted by Will:


Ok, I know you're crazy, but didn't quite think you were crazy in the way of comparing a 3.4 to a Northstar. Thanks! I enjoy being a critic

I don't doubt that a Mustang dyno can be made to match a DynoJet chart... but who actually takes the time to dial in the variables to do that? Motor Trend's C8 Corvette dyno shows how easy it is to screw up with a Mustang, even though other vehicles run that same day had more realistic results.

I'll sell you a flywheel once I get my fitment figured out

With all your lightweighting effort, I'm a little surprised you haven't picked up one of these:

https://www.ebay.com/itm/163924555048





there used to be a racing application of aluminum heads that were identical castings of the fiero heads as well, i havent seen them in years though.

Will DEC 27, 03:11 PM

quote
Originally posted by m0sh_man:


there used to be a racing application of aluminum heads that were identical castings of the fiero heads as well, i havent seen them in years though.



I'd be more interested in the Potter castings, as those were a from-scratch design for racing... a pair of raw castings was advertised on Facebook within the last few weeks.

[This message has been edited by Will (edited 12-27-2019).]

Raydar DEC 27, 07:04 PM

quote
Originally posted by m0sh_man:

there used to be a racing application of aluminum heads that were identical castings of the fiero heads as well, i havent seen them in years though.



These?

Click me!







[This message has been edited by Raydar (edited 12-28-2019).]

La fiera DEC 27, 09:26 PM

quote
Originally posted by Will:


https://www.ebay.com/itm/163924555048






WOW!!!!! I didn't know that existed! That's a unicorn!
lou_dias DEC 28, 02:27 PM

quote
Originally posted by La fiera:
WOW!!!!! I didn't know that existed! That's a unicorn!


I almost bought one of those 10+ years ago but when I read the specs, it could only be bored to about 3.2L ...
Frenchrafe DEC 28, 04:20 PM
Even at 2.8L, these aluminium blocks were pulling 300HP!
Who cares if they couldn't be overbored that much.

If this had been easier to get hold of in Europe (availability, import duties etc…), I would have gone down this route.
I would have prefered this solution to going 3800. Much easier to claim originality with the authorities, and keep within the limited (nearly no tolerence) modifications allowed here.

As La Fiera says: this is a unicorn engine!!

------------------
'87 Fiero GT. 3800 turbo. Sticky tyres. Driven hard!

[This message has been edited by Frenchrafe (edited 12-28-2019).]

jdv DEC 28, 10:34 PM
Hay lets put crappy iron heads on an aluminum block and we will have a killer v6 just like the cadillac 4.9.
La fiera DEC 28, 10:41 PM

quote
Originally posted by jdv:

Hay lets put crappy iron heads on an aluminum block and we will have a killer v6 just like the cadillac 4.9.



If i get that block I'd do exaclty that!