PROJECT 96 XR630

[Anonymous]

JE pistons are the piston of choice for Japanese car modifiers. If they are good in a blown 6 pot pumping out 1000hp then you would think the XR might just be okay

The decent forged ones would be the way to go

[GlennMember]

Mick,

099.93 stamped on the top of your piston is the manufactures size of the piston.

Standard XR600 pistons are 97mm and the 630 big bore kit uses 100mm pistons. You can verify this by measuring the lower part of the piston skirt. Donot measure higher as most pistons are narrower at the top than the bottom. I agree with MOTO when he suggests forged pistons, whether you choose JE, ROSS, WISECO any forged is better than a cast piston. When choosing an aftermarket forged piston keep in mind the compression ratio. Standard Honda pistons give a 9.0 to 1 compression ratio. Looking at your existing piston in the earlier post you are probably running a 10 or 10.25 to 1 compression ratio. I suggest staying under 10.5 if you want to use standard pump fuel. DONOT use the Honda manufactures specifications to check the piston to bore clearance as this is for cast pistons. Forged pistons will require extra clearance as they will expand more when at operating temperature compared to a cast piston. I think from memory Honda recommend a piston to bore clearance of 0.01mm to 0.05mm. This is not enough clearance for forged pistons.

Hope this helps

Cheers
Glenn

[Mick DMember]

Continued…

Obviously Tripper no longer trusted me with the job of restoring the XR,either that or he couldn’t wait to ride it. He employed KTMBULL and KTMRAT to take the engine out of his current bike and put it into the newly painted frame.
Here is the old beast.

She is very rough around the edges but the engine is sweet.
It has a full Staintune stainless exhaust. A 630 kit with a Ballards Big finned head.
And numerous other blingy bits and pieces

We had a working bee on it last night in my shed and the plan was to swap all the good bits over to another frame.
Here is a frame I prepared earlier.

Also it was decided that the swingarm was in better condition on the donor bike too, so it had to come out.

I was very concerned over Dave’s choice of gloves though. He is a KTM freak, it disturbs me to imagine what else he uses those gloves for.

Dr Dave (AKA KTMRAT) preparing the patient for its new heart.

Engine specialist Bill ,preparing to tear out the power plant for transplant.

Tripper didn’t do much at all, he pretty well stood in the background, drinking beer and picking his nose.
I suppose he did through in the occasional one liner.

Dave shows off the progress so far. (wish he would take those stupid KTM gloves off)

No matter where you leave a tray of oil, someone either ends up kicking it or dropping a bolt in it, these two idiots dropped two bolts in it, before they thought to move it. The rum was just starting to kick in by this stage.

The engine,ready to rip!! Heavy bitch too, I don’t mind telling you.

Me and Bull thought something was funny.

It was at this stage that we downed tools as things were getting silly. It was 10pm and I am sure every swear word and roar of laughter coming out of my shed was being heard by my neighbours. After the boys went on their merry ways, I snuck inside the house to an icy reception from my missus. So you can imagine why I still haven’t told her,they are all coming back tonight to finish the job!!!!!!
Trouble brewing…..

To be continued…………

[Jeffrey SmithMember]

Nice work mick, not quite as good as a ride report but looks like you all had fun.

[Mark BuntingMember]

Nice work! Hope Tripper is buying the beers I’ll give you a six pack if you can get those gloves of Rat and despose of them :woohoo:

[GregMember]

The gloves are gay Dave you have issues my friend real issues Michael Jackson is dead .

Kram from what I heard they drank all of Mick’s rum, used his tools his shed his consumables and this was after Mick gave blood to get that bike going for tripper he gets a nice upper cut. If that’s family I am glad I don’t live near mine :laugh:

TB

[Mark BuntingMember]

Trailboss wrote:

Quote:

The gloves are gay Dave you have issues my friend real issues Michael Jackson is dead .

TB

What do you reckon TB with a little Lippy and some makeup Dave may have a new career as A Jacko impersonator ;)Coming to and RSL near you :blink:

[GregMember]

kram140 wrote:

Quote:

Trailboss wrote:

Quote:

The gloves are gay Dave you have issues my friend real issues Michael Jackson is dead .

TB

What do you reckon TB with a little Lippy and some makeup Dave may have a new career as A Jacko impersonator ;)Coming to and RSL near you :blink:

Bloody oath he ticks every other box for sure :laugh: :laugh:

TB

[dennis da menaceMember]

hey fellas, Dave only wears those gloves to protect his surgeon like hands from the filth that comes with working on a honda :laugh: :laugh: :laugh: :laugh:

[Mick DMember]

menace wrote:

Quote:

hey fellas, Dave only wears those gloves to protect his surgeon like hands from the filth that comes with working on a honda :laugh: :laugh: :laugh: :laugh:

I actually heard something like that said last night, I figured he was pissed so I didn’t hit him with a rabbit killer.

[GregMember]

More for

TB

[DavidMember]

menace wrote:

Quote:

hey fellas, Dave only wears those gloves to protect his surgeon like hands from the filth that comes with working on a honda :laugh: :laugh: :laugh: :laugh:

Thanks Menace my comrade, these twits have no ideas about cross infections, just look at their steeds :laugh: :laugh: :laugh:

[dennis da menaceMember]

Trailboss wrote:

Quote:

More for

TB

you know, these days its all about safety TB :laugh: :laugh: :laugh:

[Mick DMember]

Close to being finished now. Engine is running,headlight and tail light working.No blinkers or horn yet,will have to have a bit of a play with the wiring.

Just waiting for the graphics and rego and she will be ready.

[GregMember]

So Mick why did you finish it, did you under cut rat and bull to get the work back? Or didn’t rat turn up again or something, you don’t say what happened?

TB

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