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npr piston w/floating pin?

BogusSVO

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Aug 29, 2013
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232
Location
Pensacola, Florida
They look like NPR piston modded by NRP for clips.

Not a bad idea, but why hang cast pistons on H beams?

Half the price of forged pistons, for half the strength?
 

tektic

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Dec 19, 2012
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1,497
Location
ronkonkoma, ny
I considered it for these two reasons. used good condition aftermarket rods are all over, and I actually have a set of eagles sitting on the shelf. I wanted a 2g piston on my 1g rods but can't do my own machine work and pressing.
 

BogusSVO

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Aug 29, 2013
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232
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Pensacola, Florida
I can understand the used H beam rout.

But with a 6 bolt H beam the wrist pin is still 21mm, so it would still have to be enlarged to 22mm and have new bushings.

But BC has a set of 6 bolt H beam rods with a 22mm wrist pin.

I like those and have been using them in several builds.
 

tektic

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Joined
Dec 19, 2012
Messages
1,497
Location
ronkonkoma, ny
Oh I didn't measure the ones on the shelf but the eagles in my Galant are 22mm.
 

BogusSVO

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Joined
Aug 29, 2013
Messages
232
Location
Pensacola, Florida
So either you have 7 bolt rods in your 6 bolt engine with tons of rod side clearance, or someone modded the small end of 6 bolt rods to fit the 22mm wrist pins so they could hang the 2g/7bolt pistons.

All 1g/6 bolts came factory stock 21mm wrist pins

All 2g/7 bolts and the oddball 1g/7bolt came factory stock with 22mm wrist pins.

AFAIK, Eagle never made the cross over H beam rod. with the 6 bolt big end and the 7 bolt wrist pin.
 
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