hepolite pistons

**1300xflow** · 07-11-2011, 22:51

hi everyone, was really hoping for a lil help and advice, i took a 1600 xflow apart and the pistons are hepolite pistons, number 19984, does anyone happen to know if these are standard size or oversize? as i cant find any info them anywhere.
also where i may find rings to fit.
many thanks in advance

**Graham** · 07-11-2011, 22:56

they are powermax 1600 pistons which unmodified will give 10.5:1 in a 1600,

cant tell you the size from that number though, you will either have to meassure them or polish up the inside of the bowls and see if theres anything stamped on them

**1300xflow** · 08-11-2011, 08:39

Nice one mate. Looked this morning at top of piston. I found 060l2 . That was stamped on top hedge not in bowl as nothing is in the bowl. Couple of numbers inside the piston are g1415 and kg4.

**Graham** · 08-11-2011, 09:26

nope your looking for the letters, std or the numbers +0.010 +0.020 +0.030 etc

**1300xflow** · 08-11-2011, 10:21

thats wot i thought, but cant seem to find them , will sand more tonight i think, and measure them, sure i gave them a quick measure at just over 82mm, so will double check later.
thanks

**1300xflow** · 08-11-2011, 11:51

Measured pistons at a fart over 82mm and bores just under 83mm, anyone any idea as the the oversizeness of this, cleaned piston right up and all i found was the numbers i gave earlyer, grrr,
also, where would i look for rings to suit as i been looking but keep ending up screaming at the computer lol.
Cheers guys

**SidewaysMk1** · 08-11-2011, 12:12

most likely a 1660cc i.e 60 thou overbore.

**rollerrocker** · 08-11-2011, 22:56

I'd say the 060 stamped on the top means they are 60 thou oversize. They should measure slightly under 82.5 mm

**1300xflow** · 09-11-2011, 15:32

Cheers guys, think ive sourced some rings fingers crossed,
cheer again for the help

**Graham** · 09-11-2011, 16:03

WOOOOOOW slow down matey, dont go ordering rings until you are sure of the piston size, ive seen nothing in the thread concrete enough size wise to order rings by! get someone who knows what they are doing to accurately measure the piston

**1300xflow** · 09-11-2011, 17:58

I did this morning. Got directed to an engine builder by me. Who pretty much knew wot it was when I walked through the door lol. He measured up an made some calls. His supllier seemed sure he has got the right rings so I left it with him. And u guys were right it's over by 060.
Fingers crossed they turn up and fit

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I am here: http://maps.google.com/maps?ll=51.897642,-0.388839

**1300xflow** · 09-11-2011, 18:06

I did this morning. Went to an engine builder that was recommended to me. Me measured the piston an rings an he is addiment he can get rings to suit. Yippee.
Guys u were right. He said it's 60 over. Which handy as I got it thinking it was standard. We like more cc's lol

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I am here: http://maps.google.com/maps?ll=51.897642,-0.388839

**HonkyWhiteTrash** · 09-11-2011, 18:12

I think you measure nearly a mm difference between piston size and bore size as you didn't measure the piston in the right place - you should measure them 1/2inch up and across the skirts at 90 degrees to the gudgeon pins.
Pistons are narrower at the top (to take into account heat-swell).