B&M supercharger (Page 2/6)
sledcaddie OCT 03, 10:39 AM
I'm sure a lot of people here on PFF would be interested in seeing your progress. Over the past 30 years, there have been an infinite number of alterations done to a Fiero engine . From previous comments, this appears to be something new.

What general area are you in in Iowa?
Coolkoolpyle OCT 03, 10:53 AM
I consistently get about 8.5 lbs of boost from these superchargers on a 2.8

The entire unit sits 1/2 inch lower than the original fuel injection

My car is a Ferrari F355 replica.
It has additional clearence under the hood

The strut tower must be modified and a smaller coil over shock upgrade to make the room for the modifications to the strut tower
(already done)

Basically it needs trimmed back a few inches on the forward inside corner
Rewelded to close off the tower from the engine compartment and some extra bracing to ensure structural integrity of the tower.

Compared to the four link and full tubs I put into my SS Nova it will be a easy modification

As for the fuel injection I have mounted the holley sniper unit as a side draft and located it in roughly the same place as the original throttle body to make the original throttle linkage easy to hook up.
The 90degree upper manifold to supercharger is a easy build
With some good skills at cutting, bending and welding the hood clearence is not a problem..

With no emmisions
A free flowing exhaust
A matching camshaft
and the new holley sniper two bbl EFI I can pull about a additional 100 hp from a 2.8

Once fitted and functional
The 2.8 comes out and a iron head 3.4 will go in its place

In the rear wheel drive version I've pulled a peak hp of 276 and peak tq of 262 ft lbs. From the 3.6 with 8 lbs of boost.

Of course there are lots of details I'm leaving out

butt hey

I'm a professional engine builder

You can't expect me to give out my exact blueprint.

All my personal vehicles get a 50shot nitrous set up

Because superchargers lose some power in the heating of the air fuel charge the 50 hp kit reclaims another 10 to 15% more total power over the 50 because it acts like a super intercooler and dropped the air/fuel temperature significantly when the system is engaged.

I do not have a exact figure for the n2o as I don't dyno nitrous systems

I'm starting this build sometime in the next four weeks as I'm just finishing up a turbo charged supra and then I have a BB chevy to do for a customer.

Gotta pay the bills before I play on my toys.

I will video document the entire build and post links for those that are interested.
Coolkoolpyle OCT 03, 11:02 AM
I am located deep in the cornfields of SW Iowa
about a hour south of Des Moines

There are only three things you'll find out this way

Cornfields
Racetracks
and
Casey's General Stores

and not always in that order.
DimeMachine OCT 03, 11:09 AM
I wouldn't SC a 2.8 fiero. I have seen more 2.8's spin rod bearings for no good reason through the decades. I have had 2 of them in my life and heard of plenty others. 3800SC is the ticket IMO.
Coolkoolpyle OCT 03, 11:22 AM
They do have weak rods
The bolts are small and total crap

That's why I machine .080 off the outside of a SBC rod and use arp rod bolts

Same in every other way other than the needed removal of the side material and pressing in a nice bushing so the wrist pin floats in the small end of the rod..

Easy fix

Use some nice eagle or crower rods
Modify a SBC main girdle (just cut off the front section and the rest fits like it was designed for the 60degree engines)
and use some arp studs and you got a bottom end that will take 350+ hp all day long.
Coolkoolpyle OCT 03, 11:44 AM
Machine the heads to take SBC screw in studs
Use SBF 1.6 roller rockers and SBC valves and you got a fierce top end to match.

3800 is a decent motor
but

It has very limited performance parts available
You get what you get and not much more.

For a guy that builds 1000+ hp engines

260 hp just isn't going to cut it


the 60 degree V6 is so compatible with SBC components with little modification the performance upgrades possible are near limitless.


In my opinion many rushed into the 3800 swap because they were told the 60 degree had no real upgrades available to make it a worthy competitor.

That's simply just not true.

With a custom stroker crank I built one two years ago that was a even 4.0 that cranked out nearly 300hp

That's getting into V8 territory


So while the 3800 is a very nice set up
It is not the only option available if you want more than 250hp
Coolkoolpyle OCT 03, 12:01 PM
Machine the heads to take SBC screw in studs
Use SBF 1.6 roller rockers and SBC valves and you got a fierce top end to match.

3800 is a decent motor
but

It has very limited performance parts available
You get what you get and not much more.

For a guy that builds 1000+ hp engines

260 hp just isn't going to cut it


the 60 degree V6 is so compatible with SBC components with little modification the performance upgrades possible are near limitless.


In my opinion many rushed into the 3800 swap because they were told the 60 degree had no real upgrades available to make it a worthy competitor.

That's simply just not true.

With a custom stroker crank I built one two years ago that was a even 4.0 that cranked out nearly 300hp

That's getting into V8 territory


So while the 3800 is a very nice set up
It is not the only option available if you want more than 250hp
Dennis LaGrua OCT 03, 03:12 PM

quote
Originally posted by Coolkoolpyle:

Machine the heads to take SBC screw in studs
Use SBF 1.6 roller rockers and SBC valves and you got a fierce top end to match.

3800 is a decent motor
but

It has very limited performance parts available
You get what you get and not much more.

For a guy that builds 1000+ hp engines

260 hp just isn't going to cut it


the 60 degree V6 is so compatible with SBC components with little modification the performance upgrades possible are near limitless.


In my opinion many rushed into the 3800 swap because they were told the 60 degree had no real upgrades available to make it a worthy competitor.

That's simply just not true.

With a custom stroker crank I built one two years ago that was a even 4.0 that cranked out nearly 300hp

That's getting into V8 territory


So while the 3800 is a very nice set up
It is not the only option available if you want more than 250hp


Forum member Darkhorizon (Scott) ran a 9.87 @142 mph 1/4 mile with his 3800 turbo engine in his Fiero. I would guess that he was making about 700 HP. The video is on You Tube

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

OntarioKev OCT 03, 04:23 PM
With an Intercooler, 3.0" pulley and bigger injectors I put down 316 whp, and 365 ft/lbs of tq. Working on my new setup with a decent cam and heads from ZZP, and a much smaller pulley.

People who convert to turbos make 600 whp easily out of the 3800, on stock bottom ends no less.

What your doing is certainly very interesting and unique, but I still believe the 3800 is a better platform for the Fiero.

I mean a turbo V8 is a great engine to make 1000 hp+, but thats not really what you would want in a Fiero IMO, I mean 400Whp in the Fiero gets sketchy on the street
Spadesluck OCT 03, 06:31 PM

quote
Originally posted by OntarioKev:

With an Intercooler, 3.0" pulley and bigger injectors I put down 316 whp, and 365 ft/lbs of tq. Working on my new setup with a decent cam and heads from ZZP, and a much smaller pulley.

People who convert to turbos make 600 whp easily out of the 3800, on stock bottom ends no less.

What your doing is certainly very interesting and unique, but I still believe the 3800 is a better platform for the Fiero.

I mean a turbo V8 is a great engine to make 1000 hp+, but thats not really what you would want in a Fiero IMO, I mean 400Whp in the Fiero gets sketchy on the street



Different strokes for different folks right? It is tough to tell an engine guy he cant do that, just going to push him to do it even more. Regardless of what is "suggested" do what makes you happy. If any of us was smart with our money we would steer clear of building cars, especially old Fieros. haha I say if you do it document it and post it up!