Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    
Author
Thread Post New Thread    Reply
Porsche928
 
palaur's Avatar
 
Join Date: Oct 2010
Location: Norway
Posts: 105
928, Engine 4,5l vs 4,7?? 1978mod

Hi, I purchased a 928 from usa 1978mod, unfortunately the engine was defective (no kompression on/in 1 cylinder) bugger
Not many engines in Norway thoug.
Now i have the opportunity to buy an 83 S 4.7 16V engine.

So I have some questions.
1: Fits right in the car?
2: The water pump is the same?
3. Is it the same injection system?
4. Are there any changes in the twin disk or will they fit over the 4.5 to 4.7? ()
5. Is it the same toothed/cam timing belt?


Just in mind, I'm new to the Porsche 928

Last edited by palaur; 10-19-2010 at 02:24 AM.. Reason: sp
Old 10-19-2010, 02:16 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #1 (permalink)
Network Native
 
Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 9,185
1) Motor mounts changed, maybe cross member, but still may fit, not a great cost to upgrade.
2) Some changes I think, but you should be able to make it work swapping parts back and forth.
3) 78 is Kjet CIS, and 83 if Euro would be S version of same (you will need whole intake system and fuel injection parts from the 83 to make it work properly).
4) 78/79 has some unique aspects to the clutch vs 80+, I suspect again should be compatible, but may require upgrades.
5) I don't think so, Early used square teeth, around 82 (I think) switched to round, again upgrade not too costly and maybe wise.

I would not plan on dropping in any used motor. They are all too old to be trusted even if they were running fine in the previous 928. Sitting for any amount of time the seals deteriorate so head gaskets etc cannot be trusted. Heads should ALWAYS be pulled, head gaskets replaced, cylinder walls inspected, rings, bearings too, and heads rebuilt with new valve guides.
Old 10-19-2010, 10:01 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #2 (permalink)
Porsche928
 
palaur's Avatar
 
Join Date: Oct 2010
Location: Norway
Posts: 105
great, thank you for the help.

The engine is complete and with 80k on it,, it come with complete service papers also.
it cost 2500usd so the price is rather stiff....
Old 10-19-2010, 11:03 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #3 (permalink)
Registered User
 
tlsmith1999's Avatar
 
Join Date: Jun 2009
Location: Austin, TX
Posts: 70
Ouch!!
For $2500 I hope the engine is completely rebuilt and warrantied. I am sure it is more costly over there, but here you could get the engine delivered in a running car for that price.
__________________
Tim
White '89 S4 A/T, Blue Int
Kaschmirbeige '78 5spd, Cork Int - Featured in High Heels & Hot Wheels 2010 calendar!!
Petrol Blue '79 EURO 5spd, Black & brown Pasha Int
Old 10-20-2010, 04:24 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #4 (permalink)
Network Native
 
Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 9,185
Quote:
Originally Posted by tlsmith1999 View Post
Ouch!!
For $2500 I hope the engine is completely rebuilt and warrantied. I am sure it is more costly over there, but here you could get the engine delivered in a running car for that price.
Not too likely for a running Euro S motor thats complete. They do show up from time to time, but usually either broken or not very cheap. I would not call $2500 US a bargain price, but its not more than most commercial used parts sellers would ask.
Old 10-20-2010, 11:19 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #5 (permalink)
Registered User
 
tlsmith1999's Avatar
 
Join Date: Jun 2009
Location: Austin, TX
Posts: 70
True, I was not thinking about it being a euro S motor, just a 4.7L. I wonder if the Euro S 4.7L is a little more common over there?
__________________
Tim
White '89 S4 A/T, Blue Int
Kaschmirbeige '78 5spd, Cork Int - Featured in High Heels & Hot Wheels 2010 calendar!!
Petrol Blue '79 EURO 5spd, Black & brown Pasha Int
Old 10-20-2010, 01:03 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #6 (permalink)
 
Now Available for Ordering:   101 Projects For Your BMW 3 Series 1982-2000  [more info]
Porsche928
 
palaur's Avatar
 
Join Date: Oct 2010
Location: Norway
Posts: 105
Hi called the dealership again, they also have a 81 mod 4,7s and at a lower price,, I'm hassling to the ECU unit in the price with the engine.. I'm getting the engine number tomorrow, is there someone here who decipher the engine number, so that i not get a 240hk instead a 300hk it is supposed to be?
Old 10-20-2010, 02:15 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #7 (permalink)
1982 928 us
 
Join Date: Mar 2008
Location: NH
Posts: 793
Garage
post em -- someone here will know - and/or would have a site to go to. 928registry.com?
Old 10-20-2010, 05:26 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #8 (permalink)
Recovering dismantler
 
neil30076's Avatar
 
Join Date: May 2007
Location: Cary, NC- ex San Diego
Posts: 944
Garage
this should help ( engine model # is stamped on the front of the block) -
__________________
Neil
928 OC Regional Rep - Cary, North Carolina
81 928, 84 928S Euro , 86 928 plus-
Hyundai Sante Fe, Land Rover Discovery, Winnebago Brave + Jeep Wrangler, Proline 21WA boat.
Old 10-20-2010, 06:22 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #9 (permalink)
Registered User
 
pcar928fan's Avatar
 
Join Date: May 2008
Location: Austin, TX
Posts: 238
Garage
An '81 4.7 is FOR SURE a Euro S engine...there were no US 4.7L engines till '83.

$2500 for a EURO S engine here in the states is WAY HIGH! I have seen entire running EURO S cars for that...you could take out the engine and still part out more than $1k worth of parts...

I know Carl wants $2500 for his EURO S engine, but give me a break. I have seen running EURO S engines for just under $1k! Hell, S4 engines are less than $2500 and I'd rather have that...
Old 10-20-2010, 07:00 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #10 (permalink)
Network Native
 
Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 9,185
Rewind to the first post.

Why is there no compression in one cylinder?

IMHO no used engine should be installed without pulling the heads, replacing the head gasket, and checking all the internal clearances etc. Mileage low or high is NOT a factor, its the age and damage that bad coolant can cause.
Old 10-20-2010, 09:59 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #11 (permalink)
Porsche928
 
palaur's Avatar
 
Join Date: Oct 2010
Location: Norway
Posts: 105
I'm going to restor it if i get the 81 4,7 engine, New gaskets and seals, new valve gaskets, new water pump, Will do as advised and do a full restoration of it..

The engine where used with a automatic transmission. but I'm planning to use the bell housing and disk from the 4,5 engine to make it work(hopefully).

The 4,5 engine had faulty rings on one cyl,, and a knocking sound. and the oil lamp warning light come on when the engine get hot..

the 4,5 engine have new injectors, new water pump, new distributor, overhauled K-tronic sys, new tI'mingbelt, new disks 2 piece.
Old 10-20-2010, 11:55 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #12 (permalink)
Porsche928
 
palaur's Avatar
 
Join Date: Oct 2010
Location: Norway
Posts: 105


The rims are sold, and the snow from last year..
Old 10-21-2010, 02:22 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #13 (permalink)
Porsche928
 
palaur's Avatar
 
Join Date: Oct 2010
Location: Norway
Posts: 105
The engine number is M28/12-8215116 and had a automatic gear.
Old 10-21-2010, 10:37 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #14 (permalink)
Registered User
 
Join Date: Jun 2010
Location: Loeken, Norway
Posts: 95
Send a message via MSN to 911Jarle
Quote:
Originally Posted by palaur View Post
Hi, I purchased a 928 from usa 1978mod, unfortunately the engine was defective (no kompression on/in 1 cylinder) bugger
Not many engines in Norway thoug.
Now i have the opportunity to buy an 83 S 4.7 16V engine.

So I have some questions.
1: Fits right in the car?
2: The water pump is the same?
3. Is it the same injection system?
4. Are there any changes in the twin disk or will they fit over the 4.5 to 4.7? ()
5. Is it the same toothed/cam timing belt?


Just in mind, I'm new to the Porsche 928
Hello!

I'm also from Norway, and I've also just bought a running car in need of some work. Don't think there's a need for engine work on mine, apart from a service.

Where do you live?

I have seen your car on Finn before you bought it..

Cheers, Jarle
Old 10-22-2010, 11:20 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #15 (permalink)
Porsche928
 
palaur's Avatar
 
Join Date: Oct 2010
Location: Norway
Posts: 105
Da tar vi den p norsk, bor i molde og kjpte bilen som et rest objekt, for en meget hyggelig penge.. Har us lakkering billed fin men det er alt,, han som hadde den har skiftet det meste av slite deler som bremser, styring, lys, bensin tank, bare motordeler for en god slump penger og ny kobling osv, blir vel ny motor tenker jeg om selger blir enig da om pris ..
Hvor bor du? kan du legge inn et bilde av bilen?
Old 10-22-2010, 01:54 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #16 (permalink)
Registered User
 
Join Date: Jun 2010
Location: Loeken, Norway
Posts: 95
Send a message via MSN to 911Jarle
Quote:
Originally Posted by palaur View Post
Da tar vi den p norsk, bor i molde og kjpte bilen som et rest objekt, for en meget hyggelig penge.. Har us lakkering billed fin men det er alt,, han som hadde den har skiftet det meste av slite deler som bremser, styring, lys, bensin tank, bare motordeler for en god slump penger og ny kobling osv, blir vel ny motor tenker jeg om selger blir enig da om pris ..
Hvor bor du? kan du legge inn et bilde av bilen?
Hei!

Kjpte den sorte som sto i Holmestrand. Kjpte for en hyggelig penge her og. Den virker ganske godt holdt teknisk, men litt sliten i lakk.

Bor i Fetsund traktene ca. 5 mil fra Oslo.

Skal legge ut noen bilder i morgen.

Har ogs en 911, samt en Maserati som jeg har det morro med.

Mvh Jarle
Old 10-22-2010, 03:21 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #17 (permalink)
Registered User
 
Pete R's Avatar
 
Join Date: Oct 2010
Location: New Hampshire
Posts: 2,059
Garage
I have done this. 4.5 to 4.7 euro. All the stuff from the 4.5 will bolt onto 4.7. 4.7's do run the round cam belt but the h2o pump is the same. Retain your cis, it's not worth it to switch. If you can find a euro cis intake (almost impossible though) use that. Your intake will work just flow a little less. If your worried about the clutch just use your flywheel and clutch. basically use all the 4.5 stuff (except belt items) and bolt it on the 4.7 longblock
Old 10-23-2010, 05:34 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #18 (permalink)
Porsche928
 
palaur's Avatar
 
Join Date: Oct 2010
Location: Norway
Posts: 105
Great! Thank you for the advice, I'm trying to get the engine next month.. I'm also looking at an damaged 928S 86mod in Ebay(Germany) 2000Eur is just a little more expensive but then i get the whole car,
Old 10-24-2010, 01:29 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #19 (permalink)
Network Native
 
Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 9,185
The 86 would be a very nice find. It came with the suspension and brake upgrades of the S4, but the LHjet injection and ignition might not be worth the effort of swapping into a CIS car(reuse the old cis or find the Euro S cis intake etc.). If the 86 is a 5 spd it will have a much nicer Borg syncro transmission.
Old 10-24-2010, 11:19 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 07:35 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 


DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.