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Is this proof of a 928 squirter block?

 
Old 03-10-2009, 06:48 PM
  #31  
worf928
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Originally Posted by 928autobahndreamer View Post
... ribbed intake, and Solid fuel rail mounts....
So... we have three different styles of '87 intake. Ribbed with rubber buffers. Ribbed without rubber buffers. And non-Ribbed without rubber buffers.

All we need now is a non-Ribbed with rubber buffers and then we'll be able to ask in all honesty "WTF was going on at the factory in '86 and '87?"

Stay tuned for three or four different fuel rail configurations...
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Old 03-10-2009, 07:33 PM
  #32  
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Found some additional info from a post by Doug Hillary in https://rennlist.com/forums/928-foru...uirters-2.html this thread.

Excerpt
The published "oil squirter" information from Porsche is/was as follows:

a) The operating pressure is 4bar
( Porsche 928S4 Service Information ‘87 - page 1.04 etc. Ref No. WKD493.421)

b ) As to your comment mentioned above "A very limited number.............

Well these are the Engine Numbers ( series ) for MY87;
M82/41 - 81H 00001-01000 - Manual
M82/42 - 81H 05001-10000 - Auto
And they supposedly all had oil squirters - (comments by DH)
( Porsche 928S4 Service Information ‘87 - page 0.11 etc. Ref No. WKD493.421)

I hope this gives some solid info. If anyone finds a squirter block after these numbers or one that is not a squirter within these block numbers, I would be interested to find out. Personally I hope I never find out if my block is a squirter or not. I do not want anything to happen that would be bad enough to see that far into my block.
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Old 03-10-2009, 07:55 PM
  #33  
blown 87
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Originally Posted by worf928 View Post
So... we have three different styles of '87 intake. Ribbed with rubber buffers. Ribbed without rubber buffers. And non-Ribbed without rubber buffers.

All we need now is a non-Ribbed with rubber buffers and then we'll be able to ask in all honesty "WTF was going on at the factory in '86 and '87?"

Stay tuned for three or four different fuel rail configurations...
I do have a ribbed intake, and it sure looks like no rubber buffers.
As far as what was going on at the factory, I bet they just used what ever was on hand.
I would be surprised if we found a cutoff number for the squirter blocks, as far as the vin goes and maybe even the engine number.
I wonder at what point the engine number was put on the block?
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Old 03-10-2009, 08:21 PM
  #34  
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Originally Posted by blown 87 View Post
I am not sure what you are asking?
What the heck factory document is talking about. What exactly are/were bores for piston crown cooling in the upper crankcase section which were deleted in January 1987? Were squirter deleted at exactly same time or little later?

Originally Posted by blown 87 View Post
I wonder at what point the engine number was put on the block?
It had to be at fairly late stage as number tells to what gearbox its meant to be combined with.

Originally Posted by 928autobahndreamer View Post
Well these are the Engine Numbers ( series ) for MY87;
M82/41 - 81H 00001-01000 - Manual
M82/42 - 81H 05001-10000 - Auto
And they supposedly all had oil squirters - (comments by DH)
Those are entire number range reserved for '87 MY engines. They do not tell what was actual last engine number made for '87 MY. If January '87 delete point is correct it means only first half of the '87 MY have squirters.
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Old 03-10-2009, 09:20 PM
  #35  
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I have a very high n/a hp/tq 87 engine sitting here. It is 81H00769. So it seems it is very likely to be a squirter. Right? This motor for some reason was always a more powerful one than its peers at 349bhp and 349ft-lbs normally-aspirated.

Originally Posted by Vilhuer View Post
What exactly are/were bores for piston crown cooling in the upper crankcase section?

81H06569 is automatic engine 1569. Thats quite high number.

If 35% of '87 cars made were with manual gearbox and both automatic and 5sp engines lost squirters at same time it means some 800-900 or even more manual engines had squirters.

Total worldwide '87 MY production was 4715 cars or possibly little more. 1569 + 900 = 2500 or even some more cars. This means at least half of the '87 MY production have squirters.

This means cars made in February '87 or even later will have them. This would mean ROW VIN 1000 or little larger will have them as do US VIN 1200 or even larger.
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Old 03-10-2009, 09:34 PM
  #36  
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I doubt the addition of oil squirters would cause an increase in engine power output, everything else being stock.

Dan
'91 928GT S/C 475hp/460lb.ft
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Old 03-10-2009, 09:40 PM
  #37  
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IIRC oil squiters were used frequently back in the day.............Suzuki used them on their hi perf motor cycle engines.
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Old 03-10-2009, 09:49 PM
  #38  
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Originally Posted by dprantl View Post
I doubt the addition of oil squirters would cause an increase in engine power output, everything else being stock.

Dan
'91 928GT S/C 475hp/460lb.ft
If anything there might be windage losses, all else being equal.
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Old 03-11-2009, 06:41 AM
  #39  
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Originally Posted by heinrich View Post
I have a very high n/a hp/tq 87 engine sitting here. It is 81H00769. So it seems it is very likely to be a squirter. Right?
Seems answer is no. From one old squirter thread:

January 14, 1987 engine number #81H00677
https://rennlist.com/forums/928-foru...squirters.html

So manual gearbox engine number has been known for years. Last one is 81H00677. Last automatic is a mystery but it can be narrowed down with January 14th build date info. Its also known 81H06569 has them and 81HO7848 don't. Delete point must be somewhere between these numbers. Very likely close to 6569 as 677 5sp vs 1569 automatic engines is about 30/70 ratio. Number of manual cars must be close to 30% on early S4.
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Old 03-11-2009, 09:17 AM
  #40  
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Originally Posted by Vilhuer View Post
What the heck factory document is talking about. What exactly are/were bores for piston crown cooling in the upper crankcase section which were deleted in January 1987? Were squirter deleted at exactly same time or little later?
Erkka,

I believe it is the same thing! They stopped drilling the oil feed and therefore stopped installing squirters.

To us this seems like double information, but in a production line you have to cancel both operations and that is probably why the message got out like it did.
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Old 03-11-2009, 09:31 AM
  #41  
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That makes sense.
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Old 03-11-2009, 11:28 AM
  #42  
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Originally Posted by Vilhuer View Post
Seems answer is no. From one old squirter thread:

January 14, 1987 engine number #81H00677
https://rennlist.com/forums/928-foru...squirters.html

So manual gearbox engine number has been known for years. Last one is 81H00677. Last automatic is a mystery but it can be narrowed down with January 14th build date info. Its also known 81H06569 has them and 81HO7848 don't. Delete point must be somewhere between these numbers. Very likely close to 6569 as 677 5sp vs 1569 automatic engines is about 30/70 ratio. Number of manual cars must be close to 30% on early S4.
So I guess mine may be the last known (at this point) automatic with them.
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Old 03-11-2009, 12:31 PM
  #43  
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Originally Posted by blown 87 View Post
So I guess mine may be the last known (at this point) automatic with them.
It would seem to be the case. For the record, what is VIN and build date of the car engine is from?
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Old 03-11-2009, 01:51 PM
  #44  
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The build date is unkown, been to the painters and the sticker is not there any more.
The last six of the vin are 861152
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Old 03-11-2009, 02:20 PM
  #45  
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Erkka, any thoughts on my engine number, posted above?

Cheers,

Joel
87 S4 manual - now sold
79 manual - being rebuilt with 16v screamer
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