stroker vs rebuilded 3b,wat's better??

[palles2]

my crank is a 2,5 tdi crank, and my cylinder are overbore...

there fore alomst a 2,6 liters.

i think that type off crank could last for 2,3 bars ca. 700 hk.

if you would go for more power, i would get a racing crank..

[BRY]

Which block are you using Palles2?

[palles2]

standard 3b

[S2 Ant]

I didnt think you could bore the 2.2 out to 2.6 or even close because the side walls became too thin to be reliable??

[BRY]

He's used the 2.5 tdi crank with a longer throw, so you don't have to bore the block as big as you would with the standard crank.

[ferenc]

It sounds nice,palles can you tell more?? Witch rods and pistons??


Mabye a picture??

[palles2]

arrows rods

cp pistions 8,5:1

10xrs2 injectors

2xm5 pumps

and a lot more!!!!

[Henka]

That's a pretty unusual combo, 95.5 stroke and then std deck height. This means either you have very short rods or a very low compression height. Seems to work though. But, I would not recomend it as it will give you a really crappy rod/stroke ratio (as I said, I don't know what comp height you have but I find it hard to belive that you could make a set of pistons with the pin moved upwars 16mm, so a shorter than stock 3B rod is a must in that case!). A better way to go is with the ultra strong TDi block, it's got a higher deck height which allows longer rods (std 3B/ABY/AAN/ADU rod length!) even with stock piston compression height. The TDi block is capable of withstanding at least 809hp, as Jonus runs it in his Audi 80 GTEQ (ran 10.07/24X this summer, then again Stertman kicked him with a sub-10 run with a similar engine). According to him, 900hp is not a problem with stock TDI block, stock TDI crank - doesn't even need a girder to hold the crank in place.

I'm going to use a AAT block and crank, 144mm Parner rods and then stock ABY pistons (possibly over-bore custom pistons). The reason I want a stroker is, just like Palle, to have a large capacity engine that will produce more low end torque and give me more driveability. I want it to be like an electric engine. Roll-on power!

Another killer engine concept is a TDI block, stock 3B/ABY/AAN crank, loooong rods and stock size pistons. This is a bottom end that will last, it will be much more reliable at high revs as the added deck height means longer rods whcih in turn gives you a much nicer rod ratio. Aim beyond 900 crank hp...

[martinjs]

Whats the RPM limits on these different stroker combinations?

[Chris5044]

does it make a smoother ride .... i seem 2 recall someone saying that a highly tuned stroker is more drivable than a highly tuned standard engine?

is this correct?

[caterpillar]

henka@ i think you conrods are too short....the rod and strokeratio are NOT good,with144 mm rods...similar chevrolet 5,7" and 6" .....rodlength/ stroke=at least 1,6.the higher fig,the better.with lack of torgue ,if you reduse stroke....f.x.2,5 tdiblock,and the old 1,9 or 2,1 liter crank,77,4mm,and 165(!)mm conrods
jonus have the stroker to 7500rpm with soft cut,and 7800 max.he use 155mm conrods.you may have more rpm if you have dry sump oilsystem. nearly 1000 rpm at race.

[martinjs]

Does anyone have any pics of Jonus' car? heard lots about it but never seen much of it apart from a movie of a drag run.

[Henka]

henka@ i think you conrods are too short....the rod and strokeratio are NOT good,with144 mm rods...similar chevrolet 5,7" and 6" .....rodlength/ stroke=at least 1,6.the higher fig,the better.with lack of torgue ,if you reduse stroke....f.x.2,5 tdiblock,and the old 1,9 or 2,1 liter crank,77,4mm,and 165(!)mm conrods
jonus have the stroker to 7500rpm with soft cut,and 7800 max.he use 155mm conrods.you may have more rpm if you have dry sump oilsystem. nearly 1000 rpm at race.

Yeah, it's actually no good with 144's (am I wrong, isn't that stock ABY length???). Try to work it out what kind of rods PalleS2 is using then? Must be ultra short stuff!

Well anyways, I wasn't planning on revving more than stock, I'm after the low rpm torque and getting my relatively small turbo spinning really fast. Still think it's a problem?

[palles2]

i am using arrows rods, works fine, have just bourght a 1.06 comp. side for my gt35

hope getting about 650 hk instead of 605, and about 830 nm.

[Henka]

Palle - what length rods and what compression height?