993 internals in 964
04-11-2015, 10:08 AM
#1
3rd Gear
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993 internals in 964
Hi all,
Looking for a solution to rebuild my 964 engine . The engine is being transplanted into my 79SC when I finish rebuilding it ,I plan running 993 headers ,custom exhaust and having a live remap done once run in so hoping to achieve around 300 bhp on a stock motor .
The engine had a spun 6 rod bearing , so have been considering the folowing options .
1. regrind crank will have to be at .50 oversise as had it checked and rod had already taken off .25 . However my machine shop does not recomend this . so crank is effectivly a right off ?
2. Fit Gt3 crank and custom rods , I liked this idea as new parts and stronger but had'nt realised I needed the rods to go with the crank so mucho expense.
3. I can get hold of a low milage 993 crank rods and pistons from a varioram car at a reasonable price . I have heard this will work but a little unsure .
My thoughts are with option 3 , does anyone have experience of this set up ? will compression be the same and bhp figures to? is there anything else I need to consider , other than ditching the harmonic pulley? thoughts most welcome . cheers H
Looking for a solution to rebuild my 964 engine . The engine is being transplanted into my 79SC when I finish rebuilding it ,I plan running 993 headers ,custom exhaust and having a live remap done once run in so hoping to achieve around 300 bhp on a stock motor .
The engine had a spun 6 rod bearing , so have been considering the folowing options .
1. regrind crank will have to be at .50 oversise as had it checked and rod had already taken off .25 . However my machine shop does not recomend this . so crank is effectivly a right off ?
2. Fit Gt3 crank and custom rods , I liked this idea as new parts and stronger but had'nt realised I needed the rods to go with the crank so mucho expense.
3. I can get hold of a low milage 993 crank rods and pistons from a varioram car at a reasonable price . I have heard this will work but a little unsure .
My thoughts are with option 3 , does anyone have experience of this set up ? will compression be the same and bhp figures to? is there anything else I need to consider , other than ditching the harmonic pulley? thoughts most welcome . cheers H
04-12-2015, 05:52 AM
#2
3rd Gear
Thread Starter
Join Date: Apr 2015
Posts: 3
Likes: 0
Received 0 Likes
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Hi all,
Looking for a solution to rebuild my 964 engine . The engine is being transplanted into my 79SC when I finish rebuilding it ,I plan running 993 headers ,custom exhaust and having a live remap done once run in so hoping to achieve around 300 bhp on a stock motor .
The engine had a spun 6 rod bearing , so have been considering the folowing options .
1. regrind crank will have to be at .50 oversise as had it checked and rod had already taken off .25 . However my machine shop does not recomend this . so crank is effectivly a right off ?
2. Fit Gt3 crank and custom rods , I liked this idea as new parts and stronger but had'nt realised I needed the rods to go with the crank so mucho expense.
3. I can get hold of a low milage 993 crank rods and pistons from a varioram car at a reasonable price . I have heard this will work but a little unsure .
My thoughts are with option 3 , does anyone have experience of this set up ? will compression be the same and bhp figures to? is there anything else I need to consider , other than ditching the harmonic pulley? thoughts most welcome . cheers H
Looking for a solution to rebuild my 964 engine . The engine is being transplanted into my 79SC when I finish rebuilding it ,I plan running 993 headers ,custom exhaust and having a live remap done once run in so hoping to achieve around 300 bhp on a stock motor .
The engine had a spun 6 rod bearing , so have been considering the folowing options .
1. regrind crank will have to be at .50 oversise as had it checked and rod had already taken off .25 . However my machine shop does not recomend this . so crank is effectivly a right off ?
2. Fit Gt3 crank and custom rods , I liked this idea as new parts and stronger but had'nt realised I needed the rods to go with the crank so mucho expense.
3. I can get hold of a low milage 993 crank rods and pistons from a varioram car at a reasonable price . I have heard this will work but a little unsure .
My thoughts are with option 3 , does anyone have experience of this set up ? will compression be the same and bhp figures to? is there anything else I need to consider , other than ditching the harmonic pulley? thoughts most welcome . cheers H