Originally posted by laughin2.2 CP pistons are supposed to be very good.
CP it is then......My shop just started using them and they're getting good deals on them.....I saw one for a B series, they are sweet. Short skirts....Very shiny!
Some BLING BLING for my internals!......
Let's put it this way:
When Benson bores a block for you they insist on having the pistons sent in to them, in order to get each cylinder matched up to each piston. However, if you get CP pistons, they just ask what size and bore it to spec without ever having the pistons in hand. I'd still do it the old fashioned way for peace of mind, but damn, I was impressed with that one.
Endyne swears up and down that you can drop his N/A forged pistons into FRP cylinder walls. He uses a higher silica content metal. Forged pistons would handle a moderate nitrous shot very well, and so long as your cylinder walls would hold too... if i had more money, that's what I'd be doing.
Originally posted by preluda92 Endyne swears up and down that you can drop his N/A forged pistons into FRP cylinder walls. He uses a higher silica content metal. Forged pistons would handle a moderate nitrous shot very well, and so long as your cylinder walls would hold too... if i had more money, that's what I'd be doing.
Go to www.theoldone.com Larry is one of the best, especially when it comes to pistons. Satan_SRV is running Larry's rollerwaves right now, but he wanted more displacement, so he ended up sleeving. Read the FAQs over there. It is very possible to run forged pistons on FRM so long as the tolerances are right, and the expansion rate of the piston is dead on. That's why Larry uses a higher silica count alloy for his pistons.
That's why Larry uses a higher silica count alloy for his pistons.
why? Because it will help with piston expansion? Hmmm, not a bad idea I guess.
Of course we can eliminate all of this just by boring and sleeving right? I mean eliminate the threat of damage due to forged pistons crossed with the FRM cylinder bores?
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Josh's '92 Milano Si (5spd)- The mod list is growing!!
Originally posted by Preyluder I just wanna know if it's AT ALL possible to run forged pistons in FRM cylinder bores SAFELY.
A guy on H-T.com did.....and it didn't work!
Nuff said! I have yet to see success with Forged/FRM.
They may work for awhile.....but how about longevity?!?!
A guy on H-T.com did.....and it didn't work!
Nuff said! I have yet to see success with Forged/FRM.
They may work for awhile.....but how about longevity?!?!
That guy also wasn't sure if he had his block bored to the specs Wisco suggested(he was running Wiseco pistons)
The issue with running forged pistons on FRM comes in expansion due to heat. The big problem being that FRM has a wierd expansion rate, but stock Honda pistons, naturally, account for that. As long as it's taken into account all the way through the design process, and compatable pistons rings are used(the problem another H-T member had) on paper it all works perfectly. Larry at Endyne has a very specific process for the honing of the FRM sleeves(you can't run a larger bore just "oversized" but that would help anyway.) the specs are aligned piston to cylinder. Each piston should expand perfectly with each cylinder. I wish I could send a block down to Endyne and have them build it up for me stock sleeves 11.8:1 rollerwave pistons see if it works or not, but I am a broke college student. and my H23 will have to do... for now.
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