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928 engine in a 944?

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Old 11-03-2011, 10:42 PM
  #16  
Black Sea RD
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Originally Posted by stew-gart44
The 928 motor would actually fit better between the 944 frame rails than on the 928. The 928 bellhousing even uses the same bolt pattern to the torque tube.The gotchas are the power brake booster would likely be in the way (pretty common on V8 swaps) and the 928 has the clutch in the rear, so you'd have to fit a clutch solution in the small 928 bellhousing.

The 928 uses the same bottom end bearings and parts as the 944 and is a fairly robust motor. Performance parts aren't exactly available from Summit though
this was from a porsche mechanic in germany who works at Porsche..
The 928 torque tube dimensions are larger at the bellhousing as well as its OD/ID than the 944 torque tube so the torque tubes are not interchangeable. They each have a square bolt pattern at the bellhousing but that's it for compatability.

The 928 has the clutch at the front attached to the flywheel just like the 944. The 928 uses a split drive shaft like the 968 for easier clutch R&Rs. This was designed this way from the 928s start.

Originally Posted by MAGK944
The race team was Kelly Moss, the car was never raced, apparently they couldn't get it running.

They did get it running. In fact they thought there was a problem with the driveline at an uphill portion of a certain racetrack (forgot which one) where they were testing it. They later found out it was due to the rear tires breaking loose under torque going up the hill! Was mothballed for unknown reasons.

Cheers,
Old 11-03-2011, 10:44 PM
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Originally Posted by MAGK944
apparently they couldn't get it running.
That is far from true, it ran at Road America and a few other tracks. The #1 issue they had was keeping the tires from spinning.

Last time I was at KM it was on top of a three tier shelf full of race cars.

My friend at K-Moss said they would gladly build that engine for anyone interested. And no, it will not fit into a stock 944 without extensive mods, like moving the shot towers further away from each other.......

It's an original 944 group GTO factory race car. FABCAR cut off from the firewall forward in such a way it can be re-assembled back to stock if the owner ever desires.
Old 11-03-2011, 11:18 PM
  #18  
ernie9468
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Just for the heck of it let's compare size of a 2.5 /3.0 & a 32v 928 motor out of the car,you then realize how big

the 928 motor really is.ZR8ED was asking if a 928 16V could be drop in a 944 engine bay.Yes it can as proven by Dillon & MAGK pics,the only probleme is that the engine bay will have to be modify intensively it's not just plug & play has suggested by someone here.And why will someone go to all the hassle to do it & what will be the benefit,none that I can see it since 928 16 v are usually rated at 230 HP or so unless modify.Don't forget the 944s fit with 928 motors that we have seen until now are race prepare & probably not street legal.

Last edited by ernie9468; 02-04-2013 at 04:20 PM.
Old 11-04-2011, 12:32 AM
  #19  
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Originally Posted by stew-gart44
The 928 motor would actually fit better between the 944 frame rails than on the 928. The 928 bellhousing even uses the same bolt pattern to the torque tube.

The gotchas are the power brake booster would likely be in the way (pretty common on V8 swaps) and the 928 has the clutch in the rear, so you'd have to fit a clutch solution in the small 928 bellhousing.

The 928 uses the same bottom end bearings and parts as the 944 and is a fairly robust motor. Performance parts aren't exactly available from Summit though
this was from a porsche mechanic in germany who works at Porsche..
the bottom of the motor will fit between the rails, but the heads/cams wont fit between the strut towers...hence the V shape...
Old 11-04-2011, 05:00 AM
  #20  
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Originally Posted by ZR8ED
Someone posted a pic of a 944 race car that looked like it had a 928 v8 under the hood.
that was me and I got it from the fb page of 928 motorsports that Dillion posted. as the others said, can't see it fitting without going to a space frame.







Originally Posted by Hacker-Pschorr
Last time I was at KM it was on top of a three tier shelf full of race cars.

someone had posted a photo of it in that rack. it was amazing and sad at the same time. im pretty sure it was in the last thread here about the kelly moss car but i didnt save it. i'll have a hunt...
Old 11-04-2011, 05:22 AM
  #21  
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Originally Posted by Hacker-Pschorr
Last time I was at KM it was on top of a three tier shelf full of race cars.

My friend at K-Moss said they would gladly build that engine for anyone interested.
D: It was your photo!

In this thread

Originally Posted by J1NX3D
those pics are so old (circa 2005??) and the website hasn't been updated to show any further progress- I haven't checked in at least 2 yrs though. did they actually complete it?
Originally Posted by Hacker-Pschorr
The car was completed quite a while ago then shelved, literally. It ran in a few events.
The last time I was Kelly Moss (2007?) it was on the top of a 3 tier shelf with no plans to go anywhere anytime soon.

Long story short, the owner of the car has moved on to other things.

It's an original factory 944 race chassis modified from the firewall forward by FABCAR to accept the new engine. It was done in such a way so the original front end could be re-attached.

Here it is, up on the shelf:

-
Old 11-04-2011, 06:36 AM
  #22  
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And no, it will not fit into a stock 944 without extensive mods
Probably right but I think the most desirable part would be the quick clutch swap capability. Its weird but the 944 has the worst clutch replacement setup while the 928 has the best. Moving just that over to the 944 would be a worthy effort...Bruce
Old 11-04-2011, 07:28 AM
  #23  
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928 16v engines were 310 hp in Europe (4,7 l) and can easily be modified to around 350-360 hp.

But instead of trying to fit 928 engine into front, it would be much better to fit it in the middle and ditch the torque tube.
I am toying with the idea of having 924 with with ultra-wide GTR body kit and 5.0 32v twin-turbo engine in the middle. Sounds like 950 kg and 800+hp combo to me with nice side exhausts and grip.
Old 11-04-2011, 08:04 AM
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i think if anyone can do it, you can

i always wanted to buy a small japanese hatch and midmount a toyota V8 :P
Old 11-04-2011, 08:21 AM
  #25  
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Originally Posted by Raceboy
928 16v engines were 310 hp in Europe (4,7 l) and can easily be modified to around 350-360 hp.

But instead of trying to fit 928 engine into front, it would be much better to fit it in the middle and ditch the torque tube.
I am toying with the idea of having 924 with with ultra-wide GTR body kit and 5.0 32v twin-turbo engine in the middle. Sounds like 950 kg and 800+hp combo to me with nice side exhausts and grip.
That would throw the almost 50/50 front/rear balance of the 944 way off, completely change the character of the car. It might be fine for drag racing but the thing wouldn't like to go around bends.
Old 11-04-2011, 08:55 AM
  #26  
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Would it be easier to chop the front end of a 928 and graft it to the 944? Double-wishbone suspension up front would be solved.
Old 11-04-2011, 09:06 AM
  #27  
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Awsome pics guys! I've never seen the v8 out of the car before. That thing is huge! Might even be a tight fit in Datsun 240 (you can stuff almost any engine into a 240)

Crazy a$$ conversions are not new to me, so I'm always interested in seeing the unusual type swaps/conversions, though my days of doing extreme mods are mainly behind me now, I still get that creative "itch" sometimes to go for it again.

"If I got all the money I ever spent on cars back, I'd spend it all on cars"
Old 11-04-2011, 09:29 AM
  #28  
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Originally Posted by ernie9468
+1 on more pic same car.
Now that looks wicked cool. Would love to see that full out.

michael
Old 11-04-2011, 09:31 AM
  #29  
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twice the power twice the problems twice the cost
Old 11-04-2011, 09:31 AM
  #30  
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Originally Posted by MAGK944
That would throw the almost 50/50 front/rear balance of the 944 way off, completely change the character of the car. It might be fine for drag racing but the thing wouldn't like to go around bends.

Think a little bit about the car before you post. Pretty much all of the great race-car have mid-mounted engine and I suggest you do some research about this concept

Mid-mounted engine is the best for a race-car, no contest.


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