can you turbo the quad 4?

[hannibal64]

if so does anyone make a kit or are junkyard parts easily available to make one.

[rudefyet]

nobody makes a kit that i know of...but there are a few Beretta owners that have turboed the Quad 4

 

i'd search around http://www.bstuff.com/

[Aaron]

There is a Fiero owner who made some 40x horsepower with a turbo Quad 4, on a pretty mild engine too.

[rudefyet]

on that note Jim Feuling made a 231mph (i think) turbo Quad 4 in a Cutlass Supreme

 

muyahahahaha!

[DiscoStudd]

http://www.mantapart.com has a stroked Quad 4 running a supercharger up on their main page...

[Aaron]

Wow a blown Q4 and they are barely making 200 whp. Bolt on headers to a Q4 and it will make that much. This truly shows how bad the M series blowers are.

 

But it looks like a clean project, and well put together.

[Garrett8]

no no no it is to my understand the HO quad 4 only made 180-190 at the flywheel so about 160 at the wheels (maybe) so you tellin me headers on a quad 4 would bump it up 40 horses ?

[Aaron]

no no no it is to my understand the HO quad 4 only made 180-190 at the flywheel so about 160 at the wheels (maybe) so you tellin me headers on a quad 4 would bump it up 40 horses ?

 

A good set of headers, yes without a doubt.

[bartonmd]

My friend in college, part owner of the rally car we built, had a...I think it was a '96 or '97, G20 with the SR20DE... before he turbo'd it, he had headers, CAI, and some other stuff... All of that together added up to about 20 extra hp... I don't think headers alone will make 40 extra whp, because that would mean they have to make something like 50 extra crank hp... I'd have to see the #'s and dyno charts to believe it...

 

Mike

[Aaron]

When I say headers, I mean good headers. Not crappy TOG or Hedmans, but headers built specifically for the car they are going on, with respect to its engine, horsepower range, mods, driving style, EVERYTHING. Take all this into account, create a tuned equal length set of headers with a matching exhaust, and 40whp is easy.

[bartonmd]

These were equal length, good quality headers (don't remember the brand, didn't care much... he said they were the best ones, flow-wise, that were made for that car), along with CAI and larger throttle body and stuff...

 

Mike

[bartonmd]

well, you didn't say the matching exhaust part before, but that car had 2-1/2" exhaust from the factory...

[Aaron]

I figured it was common sense not to hook up decent headers to a crappy exhaust.

 

The best flowing headers will never be the best performance wise. And they were made for the car, not his car, his mods, his method of driving, and his engine. They are generic headers, not true tuned headers. The difference could easily be 10-15hp.

[futuretgper]

oh for sure have to see dyno numbers on a 40whp pick from headers.......haha especially on a 4 cylinder.....big v8s with a set of good headers usually see a 40-50whp spike, no way a 4cyl with just a swap to long tube headers could match a v8 in pick up off of exhaust work, v8s are have way more potential for improvement in this department!! gotta see the dyno charts on that.

<---------skeptic

[JoroCorona]

A good set of Equal Length Tuned Headers on anything could yield some decent HP gains. But if you dont open up the intake then your kickin yourself in the head.

 

Only as much air as it can get in will get out.

[Aaron]

A good set of Equal Length Tuned Headers on anything could yield some decent HP gains. But if you dont open up the intake then your kickin yourself in the head.

 

Only as much air as it can get in will get out.

 

John, KickinZ, dropped his 1/4mi 6 tenths, form a 14.9 to a 14.3, with just ehaders. And yet he was still using the factory 1st gen 3.4L intake, which we all know is about the worst design possible. And I noticed a HUGE improvement, more than he did for sure, with the same crappy intake manifold. But yes, the header gains will be maximized when you optimize the intake.

 

As for dyno sheets, we can't see them, becuz no one builds headers like this. I did, and mine aren't perfect. I strongly believe I picked up around 20-25fwhp, and mine are by far not perfect. Give me one reaosn why a V8 has more potential in imporvement than the 4 cylinder, assuming both are making the same amount of power. In this situation, I believe the 4 cylinder's gains could very easily be greater, due to the fact the that headers would be optimized for 9,000rpm (S2000), and since the rest of the motor is pretty much perfect in tuning for 9,000, all that needs to keep on par is the headers. Stock S2000 manifolds suck, but the intakes, cams, etc are AWESOME. However our TPI 5.7L only goes to 5500-6000rpm, and not every component in the engine is tuned for this RPM, the engine itself is tuned for performance through the RPM range, not just a specific 3000rpm spread.

[Canada]

You can turbocharge anything.

 

Rex did.....

http://www.beretta.net/behind_the_wheel/turbo_project.htm

 

Here is his dyno chart from BerettaFest 2003.....made 234 peak whp.....

http://www.beretta.net/fast_lane/dyno_charts/bfest_03/weatherford.jpg

[Garrett8]

i was gonna try to argue with Aarron over 40 whp with headers but we all know he is always right and never wrong

[Aaron]

i was gonna try to argue with Aarron over 40 whp with headers but we all know he is always right and never wrong

 

Its Aaron, and go ahead and argue. 40whp on an otherwise stock Quad 4 might be a little much, my basic point was that it isn't hard to get a Quad 4 to make 200whp. With headers I kinda meant headers, CAI, UD pulley, exhaust, the basic crap. But I could easily see 20-30whp.

[RacerX]

Thanks for the clarification, Aaron. You worried me with that Ricer-like "40 hp to wheels from headers" nonsense. But I must say that while one might logically do the whole exhaust system in conjunction with the headers, a CAI and UD pulley doesn't come to mind without the assumption of a full bolt-on package.

 

By the way, how do you feel about the factory 4-2-1 header used on the original Quad 4?

[Aaron]

I'd need to see it, but it sounds pretty decent for a factory manifold.

[Canada]

Quads have a headER.

[Aaron]

Does anyone have a pic?

[Canada]

Of?

[Aaron]

The Q4 header manifold.