SD37 ??

[(EST)MahviaDeTyrk]

Hi

Does someone tried to build SD37 ??
I mean how about enlargening bore in block and SD25 liners in a SD33 block + SD25 pistons

[stokedapollo]

now thats a thought please enlighten me on it a lil more

[pongo]

Bring it on, I have 2 good sd33T here spare.

Id imagine heat would be an issue though as per usual on these motors

[bogged]

Hi

Does someone tried to build SD37 ??
I mean how about enlargening bore in block and SD25 liners in a SD33 block + SD25 pistons

do you mean SD27? Smaller pistons/liners wouldnt make a 33 bigger would it?

[chimpboy]

Hi

Does someone tried to build SD37 ??
I mean how about enlargening bore in block and SD25 liners in a SD33 block + SD25 pistons

do you mean SD27? Smaller pistons/liners wouldnt make a 33 bigger would it?

No, an SD25 is a four cylinder with a bore of 89mm and a stroke of 100mm.

SD33 is a six cylinder with a bore of 81mm and a stroke of 100mm.

So that is a fair bit of oversize really.

[bogged]

Hi

Does someone tried to build SD37 ??
I mean how about enlargening bore in block and SD25 liners in a SD33 block + SD25 pistons

do you mean SD27? Smaller pistons/liners wouldnt make a 33 bigger would it?

No, an SD25 is a four cylinder with a bore of 89mm and a stroke of 100mm.

SD33 is a six cylinder with a bore of 81mm and a stroke of 100mm.

So that is a fair bit of oversize really.

kewl... yea, that is quite a difference.. is there enough meat in the block?

[(EST)MahviaDeTyrk]

No, an SD25 is a four cylinder with a bore of 89mm and a stroke of 100mm.

SD33 is a six cylinder with a bore of 81mm and a stroke of 100mm.

So that is a fair bit of oversize really.

Manual says SD33 is 83x100mm - it's 3mm in radius

[stokedapollo]

this is very interesting how would you go about doing it ?

[bogged]

this is very interesting how would you go about doing it ?

buy the parts,
Pull down engine
have the old sleeves pressed out,
cylinders bored to new sleeve size,
new sleeves pressed in

Get head and crank rebuilt too = cheaper to update car.

- sounds easy.. but it never is..

[(EST)MahviaDeTyrk]

- sounds easy.. but it never is..

Sounds easy to me too - it's the only reason i'm asking
I was hoped someone has tried it allready and ......

[Tailspin]

I remember reading a Stagewright column by a Bob Kotmel in Streetmachine years ago, He was talking about doing the same thing with a 308 block, resleave the motor with thickwalled sleaves and then bore it out 125 thou, combined with a 383 stroker crank would give them 400ci, I always wondered if you could do it with a 253 block seeing they have the same stroke, Gotta love street sleepers.