Putting a 944S head on my N/A

[pdx944]

Title is pretty self exxplanitory. Can I put a 16 valve 944S head on my 1984 N/A? Is it they same size and all, so i can pretty much just bolt it on?

[jgp0rsche]

no you can't just "bolt it on" you would have nothing to control the hall sensor. you would have to do too many mods to make it work.

But to answer your question, yes it will phyiscally bolt on. it just won't work.

[SoCal Driver]

Possible to do. But why? You will gain more "breathing" but since you will not have the higher compression 'S' pistons you loose on the other side.

The higher compression is where the hall and knock sensors come into play. They look for the knocking from the advanced timing the 'S' electronics run. This is the other secret that makes the 'S' models perform.

Besides a good 'S' head is worth almost three times your 84.

As has been said repeatedly; you want more performance buy a turbo.

[pdx944]

well i was thinking having a 944S head would be better for supercharging. And dont start up with that just buy a turbo crap SoCal driver!!! The head would give lower compression so that would be taken care of.

[fast924S]

If I remeber I think the oil or coolant passage doesnt line up right or something, I know Lindsay racing can mod the head for you. If I where you Just get the Head ported and polished and get a adjustable cam gear, That should work well for a SC setup

[SoCal Driver]

Originally posted by pdx944
well i was thinking having a 944S head would be better for supercharging. And dont start up with that just buy a turbo crap SoCal driver!!! The head would give lower compression so that would be taken care of.

Where are you located? I have you scheduled for a rectal examination. Looking for brains.

Head would not give you any significant reduction in compression. The turbo dished pistions is the difference in compression.

Putting an 'S' head on a turbo has been done before. Check out www.rennlist.com.

[pdx944]

wow SoCal driver has anyone told you what an ass you are? Why do you just just spend your time on these forums *****ing at people
and making them look like idiots? Its funny because anyone with brains would know that if you have posted 7415 things on one forum, than you need to get a life. Best regards.

[Eldorado]

pdx, if you cant handle public opinion, you shouldn't be on a public forum.

best regards.

[Tervuren]

Originally posted by pdx944
wow SoCal driver has anyone told you what an (donkey) you are? Why do you just just spend your time on these forums starring at people
and making them look like idiots? Its funny because anyone without brains would know that if you have posted 7415 things on one forum, than you have a lot of knowledge. Best regards.

Making them look like idiots? Its got to be there to start with or else he won't be convincing.

A well optioned Porsche 944 - adjusted for inflation from 1983 - is around $45,000 dollars. Now think of how expensive parts on a $45K car is going to be...

Now think of the current cost of a 944 Turbo.

Get the idea?

If you want to go low budget and simple, and want more power, the simplest way is to sell the 944, and get a more powerfull car.

Eventualy, I'm going to want more power - and when that comes, I won't be trying to mod my '86 944's engine, I'll be looking at a more powerfull car.

One other aspect - is weight. If you weigh a lot - that slows the car down. I'm 6' 2", so its hard for me to be a light weight, but I try to keep myself around or below 170lb's. If I where 210 lb's, that would be 40 extra lb's for my engine to have to pull! When I race karts, this becomes even more evident if there is no weight balancing.

[Britwrench]

Discussions and debates.....

Do we rely on SoCal Driver or pdx for the right answer and realistic opinions?

Hmmmmm a millisecond later, the obvious answer is ( and always will be ) SoCal Driver.

As Eldorado says, if you can't take sound advice..move on somewhere else

Sounds a lot like a yet another forthcoming garden ornament 944.

[Porsche-O-Phile]

Dude, SoCal is one of the most highly respected and knowledgeable people in the global 944 community. I can pretty much guarantee he's forgotten more about these cars than you'll ever know.

That said, if you want to try and make it work, you're welcome to. If you have enough money and time to burn, anything is possible. As someone who has a fair amount of 944 knowledge as well, trust me - it ain't worth it. If you want an "s", buy an s. They're not that expensive or rare.

Better still, get a Honda and go hang with those guys until you grow up a little.

[pdx944]

wow i didnt mean to sound like such an ass. I was just kind of wondering if this would work because ive read places that you can do this pretty easy and gain about 30 horses. I was kind of skeptical so i wanted to run it by you guys. sorry

[pdx944]

I know socal knows like 10 times as much about these cars as i do.

[jgp0rsche]

Originally posted by pdx944
well i was thinking having a 944S head would be better for supercharging. And dont start up with that just buy a turbo crap SoCal driver!!! The head would give lower compression so that would be taken care of.

the head itself will not give you lower compression.

[jgp0rsche]

Originally posted by fast924S
If I remeber I think the oil or coolant passage doesnt line up right or something, I know Lindsay racing can mod the head for you. If I where you Just get the Head ported and polished and get a adjustable cam gear, That should work well for a SC setup

The combustion chamber on the S head is perfect, do NOT mess with it if you ever get one. NO, you can not "just get" an adjustable cam gear! their are 2 CAMS! plus if you just got 2 adjustable cam gears, they would not fit.

the S head does bolt onto a 2.5L motor. because the S engine IS a 2.5L motor.

stay tuned for my S project. a lot of info will be coming out this week.

[Porsche-O-Phile]

Hey man, sorry to be a d1ck, but you DID come on here and start flinging the stuff first. Whaterver - water under the bridge. In all seriousness it really isn't worth the trouble. Although the 16v head WILL flow better in almost all circumstances (there are a few under which it won't) the 8v head can be modified to breathe pretty well - very nice for boosted applications. Check out the "sledgehammer" head by Vitesse Racing if you're interested. They ain't cheap, but one of those heads has been used in conjunction with other upgrades to make 500+ horsepower out of a 951. No boosheet. It's an 8v head.

The compression can be addressed by simply keeping the boost down, running higher octane fuel, making sure everything is perfectly tuned, etc. Think of it this way - there are Honda/Toyota guys running 10:1 (and higher) native compression with 15-20 psi of boost and they don't have problems so long as everything is running/tuned properly. Yes, it can be done. Either that or you could swap in 951 pistons and drop your native c/r to 8:1. Your choice - there's more than one way to skin a cat.

As far as the "S" head though - seriously. Look for an "S" engine or just abandon the idea unless you want to spend a LOT more than a well-modified 8v head would cost for marginally more gain.

[fast924S]

No Im talking about just using your 8v head and porting it and running a adjustable cam gear, Drop the 16v idea

[pdx944]

Thank you gentlemen. That info was exactly what i was looking for. If i do get a sc i will probably run the boost at around 7-8 psi. I am now thinking a port and polish, and maybe 951 pistons. I was just thinking that maybe i could work out a 944s head beacuase my current head probably needs a rebuild. Again thanks a lot and sorry that i sounded like a d1ck.

[944 Ecology]

Sure, go for it... I like to see other people reinventing the wheel.

[fast924S]

Your stock 9.5cr pistons should be fine as long as your tuned good. How are you going to go about making the proper fuel and timming corrections??? Stand alone or a piggy back system???