Hey people, I have a couple questions on the QUAD 4's.
What is the difference between the regulat quad 4 and the high output quad 4?
Is the quad 4 an easy engine swap?
Is there a noticable increase with a quad 4?
I can get a quad 4 out of a grand am... how would i know if its a H.O. or not?
Is the swap really worth the power, being as its still a 4 cylinder?

Well thats a little more than a couple questions and I am sure I will have more
But thanks for any help in the meantime.
Bro outt!!!

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87 Coupe "IRON BEAST"
84 SE (project)

The HO Quad 4 puts out 175-195 hp depending on year and what it was in (195 hp in the W41 SCX Achievas)

The HO Quad 4s had different cams, bigger valves and higher compression pistons then the LO Quad 4s (150-160 hp)

The IDI cover has "High Output" on it ...

See https://www.fiero.nl/forum/Forum4/HTML/001515.html for one ready to bolt in ...

> Is the Quad 4 and easy swap?

No ... just as much "fun" as a V8 swap only more room to work with.

Paul

Come on people.... I can get a QUAD 4 dirt cheap. Just wondering if I SHOULD or not!!
In my other thread... I have come to find out that I have blow-by and that my engine may not live too long with out a rebuild.
Also, I found someone that can do the swap, a local performance shop. I haven't talked to them in person but have done research on the QUAD 4, and saw their site. I am going to find out as much as possible about this. I may stay with a 4 cylinder engine
I found many performance parts for the 2.3 and the 2.4 Quad 4's... how do I know the difference??? 2.3 or 2.4
Well thanks for the help pherder...but I got one in line already if I go with that kinda swap
Any one else with some help???
Bro outt!!!

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87 Coupe "IRON BEAST"
84 SE (project)

Hey Bro!
I have an '88 with a Quad in it. I think it was worth the trouble. It was a lot of work though. If the shop is reputable and you are willing to pay the $$, go for it.
If the question is performance.The Quad is considerably lighter than the V-6 and has much more power. I had a V-6 to begin with. The 6 had much more bottom end torque. If you car is a daily driver and you do a bunch of stop and go, you may prefer the 6. The Quad makes all its power above 4k. The 2.8 will get the Q4 off the start, but after a few yards, the Quad will pull ahead ( 6725 rpm helps).
As for reliability, My engine (90 HO) had 39k on it when I installed it.That was almost three years 45k ago. Only problem I have had was with the coil covers and coil. I replaced then and no problems since. The Quads are known for blowing head gasket though. Check out Egroups Quad fourm for information on the engine.
I hope that helps,
Bob

Don't bother unless it's a HO. If the engine came from a Sunfire GT or Cavalier it's not an HO and only has 150 hp.

You need the tranny too because the Q4 will not bolt up to the Fiero tranny. They stopped makinng the HO Q4 in the mid 90's somewhere.

QuadFiero: I heard that the reason of overheating and head troubles were because of improperly stamped head gaskets. Think that may be the problem? I will definatly check with the local speed shop, they did a northstar conversion there.... NICE!!

Also I need the tranny too??? It won't hook up with the auto in the fiero? crud!!! I am sure I can get that from him too, but still!!! crud!

Olympic: The engine would come off a earlier Grand Am, would there be a chance that these engines are "crappy" too?

Also... 150hp is bad for a 4 cylinder even if its not a H.O.!! My DUKE is only pushing upto 98 stock right!! And right now, I have "blow-by" going on inside the engine.
Even the 150 hp engine should be noticed versus the Duke engine right?

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87 Coupe "IRON BEAST"
84 SE (project)

2.4Ls are not Quad 4s. They are Twin Cam 4 cylinders. There are many durability improvements and I think the bore spacing is different. 2.3 Quad 4s also have water pump problems. If you can get the motor cheap and want to do it, then why do you need our blessing?

Someone makes an adapter kit for the transmission. (seen it a long time ago)

The motors also sound like they came off a Craftsman(tm) riding mower. If you care.

Pontiaddict: thanks for the info on the waterpump, thats what I am looking for here...INFO! Not a blessing, but if I have a couple going yippie for me, it makes me a little happier

Tranny adapter~~~ anyone know where to find the adapter??

Another thing... is there a kit like the v8 kit for the QUAD 4? and is it worth getting?

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87 Coupe "IRON BEAST"
84 SE (project)