Most Reliable Way Of Getting 2.0l Out Of A Gsr?

[dvs_prelude]

Sup everyone,
I was wondering what would be the best, most reliable way to get 2.0L out of a GSR block.
I'm planning on swapping the GSR crank with an LS crank and boring the cylinders to 84mm with GE sleeves.
Then I thought, what if I just keep the GSR crank and bore the cylinders to 84.5mm with GE sleeves?
What do you guys think? :unsure:

 

[B16]

i would keep the gsr crank and sleeve/bore it... just do an 84mm bore, you'll be very close to 2.0L

 

[beau_safken]

If i'm thinking correctly if you bore to 84mm your displacement with all the regulars would be 1.943 liters.

 

[phunky.buddha]

84 mm bore x 89 mm stroke = 1972.869921 cc (LS crank)
84.5 mm bore x 89 mm stroke = 1996.426368 cc (LS crank)
84 mm bore x 87.2 mm stroke = 1932.969181 cc (GSR crank)
84.5 mm bore x 87.2 mm stroke = 1956.049206 cc (GSR crank)

My setup was 84.5 x 89, and the new setup will be 85 x 89 = 2020.122616 cc. I'm still retaining GSR stroke geometry though.

 

[B16]

Originally posted by Calesta@Feb 21 2003, 09:23 PM
the new setup will be 85 x 89 = 2020.122616 cc. I'm still retaining GSR stroke geometry though.

man, that thing will be a beast!! any headwork planned?

 

[phunky.buddha]

Originally posted by B16+Feb 22 2003, 12:34 AM-->

Calesta

@Feb 21 2003, 09:23 PM
the new setup will be 85 x 89 = 2020.122616 cc. I'm still retaining GSR stroke geometry though.

man, that thing will be a beast!! any headwork planned?

Later, when the credit card / checking account settles down again. The block rebuild is just a hurdle- but it's another step in the right direction, since I'm now getting an OEM crank girdle and oil squirters added to the mix. Headwork will happen- I'm targetting 300hp at the crank, or about 250hp at the wheels.

 

[dvs_prelude]

Originally posted by Calesta@Feb 22 2003, 12:23 AM
My setup was 84.5 x 89, and the new setup will be 85 x 89 = 2020.122616 cc. I'm still retaining GSR stroke geometry though.

Can you explain how you will be retaining GSR stroke geometry to the uneducated please?

 

[dvs_prelude]

Originally posted by Calesta@Feb 22 2003, 02:05 AM
Later, when the credit card / checking account settles down again. The block rebuild is just a hurdle- but it's another step in the right direction, since I'm now getting an OEM crank girdle and oil squirters added to the mix. Headwork will happen- I'm targetting 300hp at the crank, or about 250hp at the wheels.

Is this gonna be a daily driver???

 

[Domeskilla]

Originally posted by dvs_prelude+Feb 22 2003, 08:56 PM-->

Calesta

@Feb 22 2003, 02:05 AM
Later, when the credit card / checking account settles down again. The block rebuild is just a hurdle- but it's another step in the right direction, since I'm now getting an OEM crank girdle and oil squirters added to the mix. Headwork will happen- I'm targetting 300hp at the crank, or about 250hp at the wheels.

Is this gonna be a daily driver???

Yes, Mike's setup will be his daily driver.

 

[Domeskilla]

Originally posted by dvs_prelude+Feb 22 2003, 08:54 PM-->

Calesta

@Feb 22 2003, 12:23 AM
My setup was 84.5 x 89, and the new setup will be 85 x 89 = 2020.122616 cc. I'm still retaining GSR stroke geometry though.

Can you explain how you will be retaining GSR stroke geometry to the uneducated please?

Custom rods. (Mike and I have talked a lot about his setup.. so i think i'm answering these questions right )

 

[phunky.buddha]

Originally posted by Domeskilla@Feb 22 2003, 08:35 PM
Custom rods. (Mike and I have talked a lot about his setup.. so i think i'm answering these questions right )

Yup. Longer rods using pistons that have a higher wrist pin mount location- so I get the longer stroke of the LS crank with the GSR's stroke geometry, and I don't bang the pistons into the head. The ratio only changes from 1.54 to 1.58, so it's not anything eath shattering, but it does get a little better. I don't think it really matters. I'll lose a tiny bit of torque by reducing the piston speed, but probably not anything I'll notice, especially not with the slight bump in displacement. I lose some piston speed, but I'll gain 23cc over the last build.