building 16v g60 engine quick question

[shaft69 10]

If building kr engine for g60 use is it ok use pg pistons and rods in it for lower compression??

[daniboy1_2_3 0]

No as I believe they would contact the valves, people use audi s2 pistons to lower the compression.

[shaft69 10]

No as I believe they would contact the valves, people use audi s2 pistons to lower the compression.

Using which rods??

[VEEDUBBED 0]

The g60 pistons won't contact the valves, i built a few 16v g60 engine years ago using the g60 pistons, off boost it was horrible due to the sleepy C/R.

After that i got a set of 9A pistons and milled 2mm off the piston's crown and added 2 metal headgaskets, great engine with no problems running 1.3Bar boost.

Rod wise i first used the original 144mm rods off the 9A, g60's 136mm versions are a bit short then bought forged h section jobbies but i never had any problems using the o/e parts.

Edited February 2, 2014 by VEEDUBBED

[Yandards 0]

S2 rods to go with the pistons give about 8.5 to 1 comp ratio on a KR block.

[daniboy1_2_3 0]

As far as im aware the g60 pistons don't have any cut outs in them for the valves which is what leads to a clash. Not seen them myself just what id read.

[Matt@OCD 0]

You must of had the G60 pistons machined, they do clatter the valves as they don't have cut outs. That's why no one uses them!

 

S2 rods are the same as KR if my memory serves me correct, 144mm

[Yandards 0]

Best bet is to use a ABF and a stacked head gasket, proven to be reliable in club GTi

[shaft69 10]

Have heard about stacking hesd gaskets on abf think jezza done ot to his. How many gaskets and how you work out compression ratio are correct???

[Roger Blassberg 0]

Speak to John Mitchell (16VG60 on this forum). He's in Littlehampton West Sussex, and knows the subject inside out.

 

RB

[Yandards 0]

Have heard about stacking hesd gaskets on abf think jezza done ot to his. How many gaskets and how you work out compression ratio are correct???

 

2 gaskets on an ABF is fine for a turbo and I think gives about 9.5:1 which is high but will be good for the overall engine performance.

 

Obviously a turbo runs higher boost so no danger of bending the rods etc.

 

John Mitchell runs S2 rods and pistons IIRC on a G60 bottom end with a decked head to increase the CR a touch.

[jezzaG60 0]

My motor was an ABF with scat steel rods and 2 gaskets to drop the compression. Never had any issues running it like this, still as far as I know the most powerful dyno proven UK G60. Also had the added bonus of doing 37mpg on a trip to E38 one year. Far better economy than it ever got from an 8v engine!!

 

I did toy with the idea of building up a new engine, higher compression again and one of the roetel racing chargers. I think 370bhp would have been possible, just couldn't justify the huge expense for an extra 65bhp!

 

Have finally decided to part with my ABF block and head if anyone is interested as I have a new engine on the way!

[vag 10]

On my 16VG60 I used s2 pistons and rods, but now going a different route so the pistons and rods are for sale with new rings pm me if you're interested.

[shaft69 10]

On my 16VG60 I used s2 pistons and rods, but now going a different route so the pistons and rods are for sale with new rings pm me if you're interested.

Pm me what looking for them.