Engine resize????

[Azman]

Right don't hurl abuse at me ( no don't really I don't like it and can't take it at the mo)

One of my mates who may not be a mate very long has suggested that when I do an engine rebvuild to get it bored out to a 2.5L

Any thoughts on this or leave well alone???

Right abuse now so that it can be passed on with a good old chinese burn!!!!:mischeif:

[ridgeracer]

the pistons would touch eachother if you bore that much, cause the walls are so thin.
you might bore 1mm or so, go for stroke if you want a bigger engine.

[Azman]

Cool that one bombed out then!!!!

Stroke that's what you do to cats/dogs isn't it (joshing)

[ridgeracer]

Cool that one bombed out then!!!!

Stroke that's what you do to cats/dogs isn't it (joshing)

it is, but the engines seems to like it also

http://www.s2forum.com/forum/showthread.php?t=6797

you dont need the diesel engine block though, use standard length rods and new pistons with the x-bolt moved aprox 4.5mm.

[S2central.net]

it is, but the engines seems to like it also

http://www.s2forum.com/forum/showthread.php?t=6797

you dont need the diesel engine block though, use standard length rods and new pistons with the x-bolt moved aprox 4.5mm.

Personally I think the 2.5l diesel block is a better path to follow... despite funky camshaft timing but Pisobiker worked all this out for us !!!!

Paul

[ridgeracer]

Personally I think the 2.5l diesel block is a better path to follow... despite funky camshaft timing but Pisobiker worked all this out for us !!!!

Paul

yes he did, and with pistons with moved x-pin you could use even longer rods, but the 2.5 tdi block is heavy isnt it ? and my innlet manifold would tuch the hood with the extra height. i will go for the 2.2t block

[S2central.net]

yes he did, and with pistons with moved x-pin you could use even longer rods, but the 2.5 tdi block is heavy isnt it ? and my innlet manifold would tuch the hood with the extra height. i will go for the 2.2t block

Is your hood lower than everyone elses ?

Are longer rods better ?

Suspect the diesel block is indeed a bit heavier than ABY - dunno how much though.

Let us know how your path works out !


Paul

[ridgeracer]

Is your hood lower than everyone elses ?

Are longer rods better ?

Suspect the diesel block is indeed a bit heavier than ABY - dunno how much though.

Let us know how your path works out !


Paul

- no, my innlet manifold is taller..

-yes, longer rods are better! you are redusing the sideway force on the piston with longer rods, because you reduce the angle on the rod when the piston is halfway up/down.

-if you allready have modified your engine with exmanifold,dp,ic etc you will probably have to do much of this over again with a 2 cm taller block as the dp will hit the axle, the tubing from turbo to ic will be to short etc.

-now you can tell me why 2.5 tdi block is better Paul ?

[caterpillar]

the sylinderWALLS are over 6mm thick(!) in audiengines,i have meshured them.the 2,3liter (7a) have sylinder dia 82,5 mm,and som less thicknes.volvo b230 have 3,1mm walls!!! se this:http://www.eurospecsport.com/db/details.php?id=432 and THIS:

http://www.s2forum.com/forum/showthread.php?t=6797

[ridgeracer]

the sylinderWALLS are over 6mm thick(!) in audiengines,i have meshured them.the 2,3liter (7a) have sylinder dia 82,5 mm,and som less thicknes.volvo b230 have 3,1mm walls!!! se this:http://www.eurospecsport.com/db/details.php?id=432 and THIS:
http://www.s2forum.com/forum/showthread.php?t=6797

and if you bore them to get 2.5 litres as Azman wanted, how much will you have left ?
4mm walls would be thin enough for me (1-2mm overbore)

is it over 6mm thick between all sylinders Caterpillar ?

[Billman]

Personally I think the 2.5l diesel block is a better path to follow... despite funky camshaft timing but Pisobiker worked all this out for us !!!!

Paul

Why is the camshaft timing on pisobikers funky? I think with the stock cam pulley and the RS2 cams he used, he just had to place the Pulley like on every RS2 (A half teeth left)!

I am right or not??