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best place to get oversize a14 pistons?
Home away from home
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Hey there chasing some oversized pistons for an a14 anyome know of any forsale or point me in the right direction to someone who sells them?

Posted on: 2016/3/7 12:31
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Re: best place to get oversize a14 pistons?
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All piston companies sell them. They are usually custom order but a few companies have off-the-shelf items

For example:
* Mahle
* Sealed Power
* JE Piston
* JP Piston
* Federal Mogul
* Ross Racing Pistons
* Arias Piston
* CP Piston
* PAECO
* Venolia
* Wiseco
* HP Engineering

Posted on: 2016/3/7 23:25
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Re: best place to get oversize a14 pistons?
No life (a.k.a. DattoMaster)
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Last A14 I built in the early 90s used some sort of Mitsubishi piston - looks like it was a G32B piston. 76.9mm, 33mm Comp ht and 19mm pin. It was about .040" oversize for the A14 and with .020 or .030" (.5-.75mm) milled off the crown - really just the outer edge to get the comp height down. Trawl through an ACL catalog... Way cheaper than getting stuff made.

Posted on: 2016/3/9 12:28

Edited by L18_B110 on 2016/3/9 22:09:36
Edited by L18_B110 on 2016/3/9 22:13:55
Edited by L18_B110 on 2016/3/9 22:32:01
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Re: best place to get oversize a14 pistons?
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Look into the ca16de piston. I've got a set here and at 78mm they look like a good cross fit for the a14/15. They have a slight dome that would need to be milled for whatever c/r was needed.

Strong piston too with drilled oil returns instead of slotted. Also have full floating pins. Obviously a performance piston even though it's not forged. Clearance will be more than a slotted piston but less than a forged so the durability would be good too.

I returned a new set of ca16 from ebay because they were slotted. So probably only OEM or good drilled aftermarket if they're out there.

Posted on: 2016/3/11 2:53
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Re: best place to get oversize a14 pistons?
No life (a.k.a. DattoMaster)
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I got my +60 thou ones through precission international New vs old pic added.
Open in new window

Posted on: 2016/3/11 5:06
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Re: best place to get oversize a14 pistons?
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One of the best places is Brprojects, in-stock, easy ordering, arrives in the post. http://www.datsun1200.asia/category/select/cid/260

A14 79mm piston kit by Kameira

Not a huge selection, but might as well go big

Posted on: 2016/3/11 5:43
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Re: best place to get oversize a14 pistons?
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I found a company that sells pistons to suit a mini minor motor still a series motor not going to go to extreme probably only +030 bigger.. im not very mechanically minded just going off what the huy building my motor is telling me hahha thanks

Posted on: 2016/3/17 0:07
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Re: best place to get oversize a14 pistons?
No life (a.k.a. DattoMaster)
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That isn't going to work.
The largest BMC A series used a 70.6mm bore.
Datsun A14 is 76mm bore.

I just bought the Mitsubishi pistons and ring set for $100 locally. Good quality ACL Duralites :) mmmm shiney!

Attach file:



jpg  4G32B piston 4KRY2705-020.jpg (89.79 KB)
518_56e9fbe180107.jpg 977X768 px

Posted on: 2016/3/17 0:30
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Re: best place to get oversize a14 pistons?
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Going .030" over is not worth it. You have the expense of machining, yet the +0.73 mm bore is only a gain of [correction:] 27 cc

As long as your paying to machine the block, go with +3 mm oversize (gain of 110 cc)

Posted on: 2016/3/17 1:38

Edited by ddgonzal on 2016/3/17 3:13:16
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Re: best place to get oversize a14 pistons?
No life (a.k.a. DattoMaster)
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I assume he just wants to recondition his engine, rather than really modify it. I imagine not every block will take 3mm over-bore anyway.

I'm doing a budget modified engine and wouldn't bother trying to stretch it 3mm! I chose these 1.4mm oversize (76.9+0.50=77.4mm) because that's the cheap, readily available piston option here, gives about 1450cc and the basically flat top piston (after milling) ups the CR to work better with a cam grind.

Posted on: 2016/3/17 2:44
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