M28/11, M28/12 Engine for sale
#16
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I agree. These Euro16v motors seem to be like gold. The engine builders here probably know about what it would cost to take a 4.5 or 4.7 US and make it run like a euro. And what will a Euro do with better exhaust/tuning?? 350hp? I am not sure how well these take to supercharging/turbocharging due to the higher compression(really good gas is an absolute).Mileage and care, as with anything on these cars, is important.
Last edited by 928Shane; 07-31-2013 at 04:37 PM. Reason: spelling
#17
#18
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I don't know the pre 87 engines very well. Please help me understand how to identify a 16 V 4.7 Euro. I thought one was to look for the "Twin Dizzy". Does this predate the twin?
#19
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The engine builders here probably know about what it would cost to take a 4.5 or 4.7 US and make it run like a euro. And what will a Euro do with better exhaust/tuning?? 350hp? I am not sure how well these take to supercharging/turbocharging due to the higher compression(really good gas is an absolute).Mileage and care, as with anything on these cars, is important.
Note to Carl: the exhaust manifolds are plain.
I've gotten about 340HP from mine with increased CR and bore, '85 exhaust manifolds and A/F and spark tuning.
A "twin dizzy" is a Euro S with LH injection. The early S cars have a single dizzy and CIS injection.
Last edited by GlenL; 07-31-2013 at 06:18 PM. Reason: Added engine size
#20
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Yes. The M28/11 and M28/12 16v motors were a special engine option when ordering your 928 available in the years 1980 to 1983 only. It has a single distributor and uses K-Jetronic mechanical injection.
The 310 HP 16v motor is the M28/21 and M28/22; has LH-Jetronic injections, and was an option available in 1984-1986.
Both of these engines are far more common in ROW than here in North America.
A lot of early cars have the "S" trim package (chin spoiler and tea cup rear spoiler) but that doesn't mean they have the "S" engine. Those items were separate on the build/order sheet.
The 310 HP 16v motor is the M28/21 and M28/22; has LH-Jetronic injections, and was an option available in 1984-1986.
Both of these engines are far more common in ROW than here in North America.
A lot of early cars have the "S" trim package (chin spoiler and tea cup rear spoiler) but that doesn't mean they have the "S" engine. Those items were separate on the build/order sheet.
#21
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Euro S 4.7L engines run VERY well..... Seans 4.7L Euro S LH (M28/22) made 278whp-298 torque WITH the restriction of a full L jet intake-AFM So that could be 327 crank HP at 15% loss....I think 300whp is possible with the full LH intake-MAF....
My engine is a bit of a hybrid 16V...full 1981 4.5L L jet engine (9-1 CR) but it has early 187-188 euro S cams and "ported" heads...that I guess flow about like euro S heads given its power...
My engine is a bit of a hybrid 16V...full 1981 4.5L L jet engine (9-1 CR) but it has early 187-188 euro S cams and "ported" heads...that I guess flow about like euro S heads given its power...
#22
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Not to mention that the 300 and 310 HP motors are 4.7L where most of the US-spec 16v motors are 4.5L. I know you know that Glen, - just mentioning it for Kurt above.
I also think that the fuel distributor on the 300 HP K-Jet engines were different, my source tells me they were hand selected based on flow for these "high output" engines. I know they are the same part number as other K-Jet engines, but in my experience and from what I was told, they flow better.
I also think that the fuel distributor on the 300 HP K-Jet engines were different, my source tells me they were hand selected based on flow for these "high output" engines. I know they are the same part number as other K-Jet engines, but in my experience and from what I was told, they flow better.
#23
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Just to correct the misinformation above ---
M28/11 and M28/12 16v were NEVER an option but standard fit in the 1980 to early 84 ROW S cars.
None S ROW cars were 4.5 CIS cars and available 1980 through 82. Practically the same as the 78 and 79 cars.
M28/21 and M28/22 16v Twin Dizzy were NEVER an option but standard fit on 84 through 86 ROW S2's.
A 1986 S2 is also very special in that it had the 87 S4 suspension and brakes like an 86.5 32v here in the States, Switzerland and Australia.
All 1980 to 1986 S/S2 ROW cars came with front and rear spoiler unless it was removed by an option delete.
M28/11 and M28/12 16v were NEVER an option but standard fit in the 1980 to early 84 ROW S cars.
None S ROW cars were 4.5 CIS cars and available 1980 through 82. Practically the same as the 78 and 79 cars.
M28/21 and M28/22 16v Twin Dizzy were NEVER an option but standard fit on 84 through 86 ROW S2's.
A 1986 S2 is also very special in that it had the 87 S4 suspension and brakes like an 86.5 32v here in the States, Switzerland and Australia.
All 1980 to 1986 S/S2 ROW cars came with front and rear spoiler unless it was removed by an option delete.
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."![thumbsup](https://rennlist.com/forums/graemlins/bigok.gif)
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
![thumbsup](https://rennlist.com/forums/graemlins/bigok.gif)
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
![thumbsup](https://rennlist.com/forums/graemlins/bigok.gif)
Last edited by ROG100; 07-31-2013 at 07:46 PM.
#24
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give it a rest roger, and btw learn how to answer an email when you plan on getting serious about running a business
carl, thank you for bringing these parts to our attention, just ignore those bozos
carl, thank you for bringing these parts to our attention, just ignore those bozos
Last edited by ROG100; 07-31-2013 at 08:03 PM.
#26
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Did someone get their knickers in a twist because they could not follow the Rennlist rules like everyone else has to. Very simple but I guess that is asking too much of Carl.
Or did I miss something 8>)
I am taking my ball and going home and do not want to play with you rough bad guys anymore 8>)![crying](https://rennlist.com/forums/graemlins/bigcry.gif)
Or did I miss something 8>)
I am taking my ball and going home and do not want to play with you rough bad guys anymore 8>)
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#27
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FBIII Luckily I do not compete with 928 MS - maybe two or three parts only and then I am way cheaper.
Just can't stand the bull**** info passed out.
Just can't stand the bull**** info passed out.
#28
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Careful here. Gretchen is playing favorites and you could get an "infraction" for even talking about "you know who".....I did.
#30
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The rings on the 4.7l are a main issue. Last time I looked... Well, I shouldn't have looked. At the prices. I once bought a set of 4.5L pistons and rings new in boxes (2002 or so) for 100 dollars. There are now similar boxes on ebay for 1200. Thats better than real investments.
Like Greg said on the the 85 BW trans - I am going to start hoarding again.
Like Greg said on the the 85 BW trans - I am going to start hoarding again.