JP Rodkey

Just a bit of anecdotal information:

My '79 Euro now has a transplanted '84US 4.7 block and heads but with the original Euro camshafts transplanted along with the original CIS setup. Testing on the stand, I am convinced it's non-interference. However, I chose not to cut the timing belt while the engine was running for a "real-world" scenario.

Lizard928

from everything I have checked/personally tested all 16V engines (short of the 5.0L hybrids, or custom pistons) are NON interferance. This includes a 85 Euro which I PERSONALLY verified was non interferance, that was the 10.5:1 CR Dual dizzy engine.

The timing belt on the 928s are EASY to do, especially compaired to a VW, 944, etc. I would say the only other car that I have done which was easier was a 924, the 931 is more of a PITA as you must remove alot to get at it.

Airflite40

Oh yeah the timing belts are way easier since you have tons more room between the engine and Rad than on a 944

82-T/A

RIGHT!!! I almost forgot! The V8 doesn't HAVE balance shafts because it doesn't NEED it, right? So therefore, even though the timing belt is a million miles long, there's just THAT MUCH LESS I will have to deal with.

I am so excited...


I'm going to search for a Euro CIS, but if I find a nice 78-79 I'll buy it.

Man... there is one on eBay that is absolutely beautiful...

1979 Porsche 928


I'm really torn as to what I should do. The car is close enough that I could easily tow it down (or drive it), but it doesn't have a sunroof!!!

That car would be absolutely perfect for me, except it doesn't have a sunroof. I don't suppose it's easy to install a Sunroof in it, is it?

bronto

Non-sunroof cars (I've learned) are sought-after, because there's more interior head room for taller people.

For the experts - are there any 32 valve motors that are non-interference?

Airflite40

928 sunroofs are nothing like the 944 sunroof, it is much smaller and considerably cuts down on headroom.
Also the 944 sunroof is relatively easy to maintain, as the 928 sunroof is more complicated and more prone to break.

Trust me you wont regret not having one!! (sunroof that is)

That 928 does look really nice, the only thing is those seats are horrendous IMHO. If I were you I would buy it and swap in the script seats from 944 that you have....

NOPE all 32vers are INTERFERENCE!!!

Jim bailey - 928 International

All the 32 valve 928 engines bend valves if they get far enough out of time.

JEC_31

ROTFLMAO

I got this mental picture of you standing in front of a running motor on a stand, without timing belt covers, and you're holding a big bowie knife in your hand just contemplating the ultimate acid test of non-interference.

I need a drink.






That car looks great to me. Those are some wild seats, cool steering wheel, and tons of $$$ already spent on it.


Simple. Test drive it, PPI it, and buy it.

Who cares about the sunroof? Adds weight, cuts headroom, adds another thing to go wrong, lets in skin-cancer rays, rain if the seals go bad, and even bird droppings. Good mechanicals are more important.

- Josh

F451

x 2. It looks nice. Not too many of the OB's that look and sound that good.

82-T/A

Thanks guys, I think you're right... the car does just look really good.

First thing I would do though is try to find a set of original seats, and a factory steering wheel. I'm not much for aesthetic customizations.

Airflite40

Just swap those scripts in from the 944! They aint going nowhere and they would look killer!!!

LT Texan

I wouldn't let CIS put me off a '79. An Old Bugger 5 speed is a load of fun.

Do you know about the Technical Data that Dave Roberts maintains on his 928 Specialists site? That might answer some of the questions you have.

Happy fishing.

F451

I keep reading comments like that about the old buggers and its really making it tough not to get one. They sound like they would make a fun track/DE car.

docmirror

Sigh, I'd have a hard time cutting on a decent 928 OB. If there was a breaker car, with stuff already off, and in sad shape inside, I'd start cutting, but these two are much too nice to carve on.

I still like the greeny. Let me know if you don't grab it, I might take a hack at it later. If anyone is around Michigan that can have a look let me know. Of course, the OP has first right of refusal.

RicerSchnitzzle

Personally I love the CIS. Being an old carberated muscle car guy, it doesn't tax my brain like an electrionic set up would.

'82 ROW added a Lamda circuit and O2 sensor. My '81 has none.
I am still fine tuning my Hybrid, but it's just turning the one A/F screw. No way to fine tune to RPM, but works well enough for me. Run hard a bit, chekc the O2 gauge, pull plugs and adjust untill it's perfect.

Good news us the CIS can handle over 400RWHP with out any major mods. WUR and fuel pressure can be adjusted to dial in HP as well.

I have been worried about parts, not just CIS. I have been grabbing up extra set ups when they come along cheap. I now have 2 complete extra CIS/EuroS Intake set ups. I also have 2 rebuild kits sealed in a FoodSaver vacuum bag. If you're patient good deals come along. I got a complete Euro S motor for $700 delivered, just to get an extra set of heads and cams. I bought two 5.0 liter blocks for around $400 each for the hybrid build. Used one for the hybrid and sold the other for what I paid. I also picked up 2 sets of 79 cams and housing in case I decide to Turbo in the future.

Bottom line, CIS is fun and easy to deal with. Parts can be found now for the future, and cheaply if you are patient and look around a lot.

If you get a US 78-79 and take the cats off, you should push the Euro numbers. Headers and your having fun. The 78-79 are lighter than the newer models as well.