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ok , I would like to try and make a sticky thread on which pistons are known to fit in the fe3. Because I know there's a few but I am not sure which ones actually fit.
So if everyone can chime in on the TRUE piston info that would be great.
also is there any pistons besides custom ones that will work with the f2t stroker crank?
 

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let me be the 1st. :)
in one of my stroker engines i have Nissan SR20DET pistons.
they had to be machined to fit the stock fe3 rod. other then that they fit right in and are "as good as" flush with the deck.

in my other stroked engine i use Honda H23a pistons. they also needed machining to fit the stock FE3 rod. the engine had to be shaved about 2.2mm.
also the piston had to be machined to fit a sirclip. the piston pin had to be made shorter to fit the piston with the machined sirclip space.
 

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yea sorry for my bad english here.
engine i mean block i had to have it shaved to get the pistons stick out about 0.7-0.8mm to get "quench" from about 0.7-0.8mm
the block with the honda pistons will be used NA and the one with SR20DET pistons with a turbo.
ill make some detailed pics from the machining.
i think a few float around if u search for H23a/H22a or FE4 :) (my self thought name for a stroked FE3 ;) )
 

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let me be the 1st. :)
in one of my stroker engines i have Nissan SR20DET pistons.
they had to be machined to fit the stock fe3 rod. other then that they fit right in and are "as good as" flush with the deck.

in my other stroked engine i use Honda H23a pistons. they also needed machining to fit the stock FE3 rod. the engine had to be shaved about 2.2mm.
I was just about to buy a set of SR20DET ones for the stroker I am building....is the FE3 rod too thick for the SR20 piston, is that where the issue is ?
 

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Custom stroker kit

Well iv had my engine built by a engine builder i found out were he got the parts from SPS pistons Kit coated $1450 Argo rods $1600 with a F2T crank cast ion or R2 crank cast steel modified to fit oil pump . Might cost a bit but solid as. Those parts are all from Australia
 

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yes that is the only issue just have your machine shop narrow up the eye in the rod
hmmm, machine piston, or rod. hmmm. how much meat is in the pistons? removing material from either critical spot could be dangerous.
 

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That depends on how much material is to be removed.....I guess the Rod being Iron has probably got the greater tolerance for material removal...I always try to steer clear of modding pistons unless the work is minor.

There are quite a few people on the site who say theyre using SR20DET pistons in their stoker builds, i'd be interested to find out if the same technique has been used by everyone to fit them, and whether there have been any issues.
 

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making space for a clip to secure the piston pin


left is honda H23a right is stock FE3


FE3, stock rod on stock piston as they come from the factory




Honda H23a pistons with stock FE3 rod.




as u see its marginal what needs to be removed, less then a mm i think.
ill make some pics of the finished result.. i had them done over a year ago but never bothered to post.....
 

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Thanks for the detail.....

Is it the same case for the SR20DET pistons, or is there more material to be removed ?
 

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Discussion Starter #13
now I am a little confused, are you talking about machining the bore where the wrist pin slides into. or are you talking about machining the gap where the rod sits inside the piston?
 

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both..
for the Honda piston u need to make room for the rod, bore the block to 87 and have the piston and pin machined. (read earlier post)
for the Nissan piston u need to make room for the stock FE3 rod.
 

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the honda piston is 87 in bore while fe3 is 86, so if you are going for the gonda one you have to bore your sylinders, after what ive heard
 

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I am running Mitsu 4G63 Wiseco pistons. K54M865 (thats a 60 thou oversize for mitsu piston or 20 thou oversize for the FE).



With that, my comp ratio is 8-1. Was initially 7.6-1, but then we decked the head and the block to get it to 8-1.


Now Wiseco have a 100% correct piston for the FE. Someone here should have the part number.

Wiseco PDF link http://www.wiseco.com/PDFs/Catalogs/SC07/MazdaMiniMitsu.pdf
 

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edit!!

as its been 2 years ago since i started to work on my stroker engine ive been mixxing up info.
for that i want to apologize as i dont want any wrong info to get to u guys.

please reread for previous posts.

thanks and sorry.
 
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