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**Frosty** · 12-05-2013, 08:35 PM

Anyone got any idea why or how this has happen on my pistons out my engine. It has happened on 3 out of the 4 pistons. It would seem like a valve has hit the piston but im not sure how its happened.

Anyone got any ideas? Also i guess i will need to change the pistons now?

**Jonny b** · (This post was last modified: 12-05-2013, 08:39 PM by Jonny b.)

Surely That's been made like that! Your valves would be seriously f*cked if they managed to make them indents

**Frosty** · 12-05-2013, 08:42 PM

They may be meant to be like that but i duno.

Josh_Quant · 12-05-2013, 09:02 PM

looks like cambelt snapped at some point

**Frosty** · 12-05-2013, 09:07 PM

Thats what i fort it could be. If it had though it would of been a while ago cuz ive had the car 3 years and my mate had it for 7 years before i had it and he has never had the head off.

Toms306 · 12-05-2013, 09:23 PM

That's odd!

Surely both valves would hit the piston if the belt snapped, or if someone timed it wrong though?

**Frosty** · 12-05-2013, 09:28 PM

i timed the engine up before taking the head off and all timed up ok

**Ruan** · 12-05-2013, 09:31 PM

DEFO valves hit piston...

Toms306 · 12-05-2013, 09:32 PM

But, I was thinking if someone got it slightly wrong at a previous belt change, heard that it sounded bad and tapped like a '6, then re-timed it after...would that be the outcome? Does one valve come out further than the other?

**Ruan** · 12-05-2013, 09:34 PM

That's a belt snap caused that... Ive ran an XUD 3 teeth out and its fine...

**Tom** · 12-05-2013, 09:36 PM

Dats craaaaaaazy!

Toms306 · 12-05-2013, 09:39 PM

(12-05-2013, 09:34 PM)Ruan Wrote: That's a belt snap caused that... Ive ran an XUD 3 teeth out and its fine...

Fair enough, was just curious. Big Grin

How come theres only one valve mark though? I've seem a couple of (assumed) cambelt failures without head at the scrappy and they had both valve marks.

**Frosty** · 12-05-2013, 09:42 PM

I need to get some other pistons then?

Jonny81191 · 12-05-2013, 09:45 PM

Ouch, that's hit quite hard there!

**cully** · 13-05-2013, 05:29 AM

frosty maybe you need to check the rods too!

@tom go read up on your 4 stroke cycle, both valves are only open for a very short time
one or the other valve is open for a far longer duration

Jimbo · 13-05-2013, 05:48 AM

(13-05-2013, 05:29 AM)cully Wrote: frosty maybe you need to check the rods too!

@tom go read up on your 4 stroke cycle, both valves are only open for a very short time
one or the other valve is open for a far longer duration

He's putting hdi rods in that's why it's coming apart

**Frosty** · 13-05-2013, 12:35 PM

So it looks like I will get some new pistons depending on price.

What would people recommend? Is there any uprated 1s?

CJ_Derv · 13-05-2013, 02:16 PM

I got a set of pistons and rods xud ones shells only done 5k along with rings in a spare block pm if interested

**Frosty** · 13-05-2013, 02:42 PM

Ok mate going to look at some spare engines that I got.

Got a price for new pistons which is 91 + vat each piston

Pice for rings 80+ vat for the set

CJ_Derv · 13-05-2013, 03:40 PM

The rings and shells stand me at about 120+ but have a figuire in mind for complete set pal

Toms306 · 13-05-2013, 10:14 PM

(13-05-2013, 05:29 AM)cully Wrote: @tom go read up on your 4 stroke cycle, both valves are only open for a very short time
one or the other valve is open for a far longer duration

I'm aware of that, but I thought when the belt broke, there would still be momentum so the other valve would hit as well rather than it just stopping dead?

**Ruan** · 14-05-2013, 03:43 PM

Probably smashed the cam in two shortly after that happened!! Then of course the other definitely wouldnt have!!

**Dicky** · (This post was last modified: 14-05-2013, 03:49 PM by Dicky.)

(14-05-2013, 03:43 PM)Ruan Wrote: Probably smashed the cam in two shortly after that happened!! Then of course the other definitely wouldnt have!!

like one i bought with a f*cked engine, best snapped smashed the piston and cracked it with an indent like that and snapped the cam in 2

**cully** · 14-05-2013, 04:17 PM

frosty ...puglove has a complete engine for sale cheap!

Toms306 · 14-05-2013, 04:32 PM

(14-05-2013, 03:43 PM)Ruan Wrote: Probably smashed the cam in two shortly after that happened!! Then of course the other definitely wouldnt have!!

(14-05-2013, 03:46 PM)Dicky Wrote:
(14-05-2013, 03:43 PM)Ruan Wrote: Probably smashed the cam in two shortly after that happened!! Then of course the other definitely wouldnt have!!
like one i bought with a f*cked engine, best snapped smashed the piston and cracked it with an indent like that and snapped the cam in 2

Ah, I didn't think of that lol!

**Frosty** · 14-05-2013, 04:53 PM

(14-05-2013, 04:17 PM)cully Wrote: frosty ...puglove has a complete engine for sale cheap!

I saw he did. I got some spare engines anyway but I am tempted bits it's hassle picking it up

**Frosty** · 14-05-2013, 09:12 PM

Before i go spending money on getting new piston rings is there any uprated pistons out there people use that aren't mega money?

**cully** · (This post was last modified: 14-05-2013, 09:14 PM by cully.)

cast your own! bert did with his indian Smile

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