Was thinking the Diesel oil pump would be designed for peak efficiency at 4K RPM but I can see what your saying, happy to hear otherwise and that it works fine.
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1990 B3 2.0 80 quattro.
1992 C4 2.8 Avant quattro
1994 MTM RS2.
1998 B5 TDI quattro Sport.
2000 B5 TQS. -
Ok, so maybe I will use the AEL pump then... Will compare the internals of the diesel and gasoline models.
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - ProjectComment
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Has anyone a stock 20vt headbolt to measure the length of it? Can't find the info anywhere. Just wan't to know if it's the same length as the diesel 12x115mm headbolts. Thanks!
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - ProjectComment
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Reinz part number 14-32049-01 M11 138mm length.1994 URS4 Avant RS2+Comment
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Ok, thanks. Just what I was thinking, diesel bolts are too short.
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - ProjectComment
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You can use 2.5 tdi V6 bolts. They are 155mm.
http://www.rexbo.eu/audi/a6-4b-c5-97...ad-bolt-100378Audi UrS4 609hp/846Nm @ wheels
10.911@210, 1km 268km/h, 1mile 295km/h
FATS 2,30 secComment
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BMW bolts also. Make sure you change the oil squirters from the diesel ones to the petrol ones on the blockComment
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Yes, I know the BMW ARP's, have to sell my kidney to get them though.
Budget solution is to use normal tdi bolts.
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - ProjectComment
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thread pitch is 1,5 mm and these ones has 1.75mm :
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Old thread, but just to inform, I will use normal M12x160 12.9 grade bolts as head bolts, they are something like 2e/pcs.
One question about stroker builds, have you guys who build strokers ever needed to grind of material from the bottom of the bore so the rods have enough room to turn over with the crank? Seems that in my build the rods made contact with the bottom bore step, so I need to grind of some material there.
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - ProjectComment
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Yes, I had to grind there. Used Sten Parner Rods on 95.5 crankshaft.
like this:
Go Holset or Go RS4Comment
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I had to do the same, Sten Parner rods and a 95.5mm crank.sigpic
1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racerComment
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Ok, so it seems to be normal then. I'm using FCP X-beam 155mm rods. Then we shall grind some...
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
BMW 320d Touring e91 M-Sport - Daily user
BMW 740iA e38 - ProjectComment
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Yes, grinding need is normal. A bit more on 3b blocks, a bit less on other blocks- but especially with longer rods, you definitely have to machine out the block.Comment
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