L28 Pistons
#1
L28 Pistons
So I took my N47 block to the machine shop to remove a stud that was broken off in the block. The cylinders also had some pretty bad wear, they recommended boring it 20 over. I can always buy another block and use my stock internals which are all in great shape...but I like the idea of working with this one and doing some modding. What pistons are recommended??? I dont mind spending a little money if the gains are worth it. I also need to buy a clutch. Will I gain anything from a performance clutch or expensive pistons? Please chime in and point me in the right direction of what I should buy and where to get it from. BTW the machine shop quoted me $400 for pistons and couldnt even tell me where they were from.
#2
Maybe you should try a diff machine shop? Was this an old guy who has worked on Chevy motors his whole life, or a Japanese motor shop?
I know Nissan stopped making the .020 over bored pistons for the L28ET, but I don't know if they still make the flat tops. Have you checked Nissan, MSA, BDA?
ITM is a "fairly" good aftermarket company & they sell .020 pistons ($192 for pistons & rings here):
http://cgi.ebay.com/ebaymotors/2753-...item563a080c84
Unless you are going w/ a high hp motor, there is no need for forged pistons.
I know Nissan stopped making the .020 over bored pistons for the L28ET, but I don't know if they still make the flat tops. Have you checked Nissan, MSA, BDA?
ITM is a "fairly" good aftermarket company & they sell .020 pistons ($192 for pistons & rings here):
http://cgi.ebay.com/ebaymotors/2753-...item563a080c84
Unless you are going w/ a high hp motor, there is no need for forged pistons.
#5
So I took my N47 block to the machine shop to remove a stud that was broken off in the block. The cylinders also had some pretty bad wear, they recommended boring it 20 over. I can always buy another block and use my stock internals which are all in great shape...but I like the idea of working with this one and doing some modding. What pistons are recommended??? I dont mind spending a little money if the gains are worth it. I also need to buy a clutch. Will I gain anything from a performance clutch or expensive pistons? Please chime in and point me in the right direction of what I should buy and where to get it from. BTW the machine shop quoted me $400 for pistons and couldnt even tell me where they were from.
#6
Cheap HP
I'm getting back my block from the machine shop some time next week...I'm putting together a fresh machined N47 head block bored .020 over w/ ITM flat pistons new water pump bearings all gaskets etc. Engine will be as good as new. While I have it all apart, what upgrades are recommended? I was looking into maybe a performance camshaft or a lightweight flywheel. I get discounts on parts and free labor What do you guys recommend?
#7
N47 head. I got mine from a machine shop so I'm not really sure how much they cut it...It doesn't seem like much though. I'm putting it together next week hopefully, I'll do a compression test. How does it run by the way? Happy with the results at all?
#8
ya it was good i think shady's is built the same way if iremember correctly.... just HAVE to un 91 it was fun till i moved out left the car, it sat for 4 years and is now being parted out....its probably not necessary but i ran a turbo oil pump since the compression ratio went up and stress on some of the internals...
#9
Merged threads...
What I always say:
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