vaughn2344 Posted February 6, 2015 Report Share Posted February 6, 2015 Does anyone know what size Pistons are in a L20b engine and where to get new Pistons. I have been wanting to put oversized Pistons in but not sure what to order or where to order them. Any ideas?? 1 Quote Link to comment
sebpv Posted February 6, 2015 Report Share Posted February 6, 2015 rockauto. They probably list pistons for .30 bored cyclinders 1 Quote Link to comment
Dolomite Posted February 6, 2015 Report Share Posted February 6, 2015 They say 87mm is the biggest you should go. You can use 280zx dished pistons, there are many places to get them. 1 Quote Link to comment
Doctor510 Posted February 6, 2015 Report Share Posted February 6, 2015 Stock are 85mm, get L28 pistons rings etc ITM is good, L28 stock is 86mm, + .040" (1mm) for the L20B. DO NOT USE DNJ, argue if you want, you'll be sorry. 2 Quote Link to comment
datzenmike Posted February 7, 2015 Report Share Posted February 7, 2015 L20B engine bored to 86mm Stock 1mm oversize L18 pistons.....9.44 compression (Nissan # 12010-U2006) L20B engine bored to 86mm Stock 86mm L28 dished pistons....... 8.6 compression Stock 86mm L28 flattop pistons..... 10.11 compression 1 Quote Link to comment
Charlie69 Posted February 7, 2015 Report Share Posted February 7, 2015 Mike is the compression ratio figure with open or closed chamber head? Quote Link to comment
datzenmike Posted February 7, 2015 Report Share Posted February 7, 2015 I used the stock L20B open chamber head as it would be the most common. 1 Quote Link to comment
Charlie69 Posted February 7, 2015 Report Share Posted February 7, 2015 Thank you Mike. Quote Link to comment
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