67King

I've got a bare 16V head. It has had the tensioner tower repaired. I have the cam caps, but neither of the ladders at the front or the rear. To make it work, you would need to take your cam ladders, have them broached down, and have the cam bore line-bored. My caps would probably need to be line bored, as well. WOuldn't take a whole lot, and you could keep it an S. You'd also have to supply your entire valvetrain. I'd like about $200 for it, but I'm open to offers.

Chunkerz

If you want to swap it on you will need the 8 valve pistons, injectors, DME, exhaust, wiring harness, air box, AFM, J boot, intake, throttle body, and maybe the bell housing (not entirely sure on this. S only has one sensor in the bell housing. 8 valve has two sensors in the bell housing, so it's likely). Those aren't impossible to swap on there, but it's more trouble than its worth. You'll spend more money doing that than getting another 16 valve head or having yours repaired.

You mentioned that you bought a complete 8 valve motor over on Pelican. How many miles are on it? If it has a lot and you have a large budget, then it might be a good idea to rebuild it while it's out of the car.

67King

There's more to why holes are where they are than coolant flow. There is also manufacturing.

Which is why it is best to look at the head gasket, which is the flow controlling device between them. And they use the same head gasket per Auto Atlanta (95110437402) and Rock Auto.

In other words, you CAN put a 16V head on an 8V block.

Arominus

Chunkerz, once again you don't know what your talking about. The 2.5 block will take the 8v head or the 16v head from an s.

It's the same block.

odurandina

keep it the same and fix it. your goals for the car might also help you decide if you have the stomach to go all in with a same engine swap or engine upgrade. that block could be fine. but, unless i've missed something, sat 10 years doesn't exactly inspire great feelings about messing with this engine.

Chunkerz

Convert your cars and let me know how they run. Just because it fits doesn't mean it will work.

Arominus

Eh waste your own time to prove your right. I've got both motors, the block is the same. The pistons are not. The heads interchange on the blocks. The only real complication you will have is with an early non-self tensioner block since it needs the bosses for the self tensioner drilled (if the boss is there at all), so you would need a late block to keep it simple.

Keep on trucking brother, you know everything.

Edit. Here i did the hard work of pulling a 944s block pic and a 944 block pic. You tell me what differences you see.

944S block

944 block

Chunkerz

odurandina

in the end, what all this fancy automotive engineering amounts to,

is an epic pile of junk with a fat bow with a Porsche Crest on top.....

an overgrown bucket of bolts weighing just about as much as a Goodwrench V8.

michaelmount123

88 944S: Post a photo of your damaged head - the tensioner area specifically. Perhaps I can repair it for you.

As an alternative, 67King has made a very generous offer. It may even be simpler than he indicates since you may only have to address the front cam cap bridge - if any at all.

67King, Your head is an S, isn't it? The S2 heads have different water passages at the front.

MM

Chunkerz

Very interesting. Well then, I'm a dumb ***. I'll remove the BS I posted earlier.

67King

Shoot, the only head I don't have is a 2V NA. I've got two S heads (this one plus a complete one w/ all valvetrain), a 968 engine, an S2 engine, two Turbo engines, and a spare turbo head. Nevermind the other parts of the engines.

My name is Harry, I'm a part-o-holic.

I'd love to see this S head get used. Had initially bought it to do a turbo 16V, until I got the 968 engine. Am hanging on to the rest of the stuff until I find out how light I got the race car, and will likely convert to either S2 or S to run as light as I can.

67King

No, you were mistaken. Big difference.

Arominus

67, if the OP isn't interested in your bare head, ill take it for my car. Thanks!

Racerstev

I was in the same boat with my 87S I bought not running with a broken head. I wound up getting one from EBay UK. It came with cams for a
pretty good price, shipping wasn't cheap though...

Steve