Big Bore or just buy the parts?

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tdub2112 · #1 Unread post by **tdub2112** » Fri Apr 06, 2007 3:04 pm

OK, 94' XR 100 (as always) the engine is tore out and some parts like the cam and jets need to be replaced, or i could get a 115 big bore kit. what do you think would be cheaper?

I'll try to get everything needed added on soon! (i just need to know whats

and

)

Sev · #2 Unread post by **Sev** » Fri Apr 06, 2007 3:18 pm

Cam shouldn't be changed with a big bore kit. Jets are from the carb, and will need to be changed if you do big bore it.

JCS · #3 Unread post by **JCS** » Sat Apr 07, 2007 12:39 am

If the cam needs replaced now it will still need replaced with a big bore kit. If you bore it you will at least need to rejet if not go to a bigger carb. Maybe need a new pipe, too.

If the cam is shot now you may want to check the head and valves for damage too.

tdub2112 · #4 Unread post by **tdub2112** » Sat Apr 07, 2007 8:54 am

OK, we need a new piston, conecting rod, and yes a new head! Along with the cam, maybe not the jets. the story behind it is i just today got it free from a neighbor and some of his buddies ran it out of oil

so we got a freeby. we wonder if we should go for the big bore or replce it stock price wise.

BuzZz · #5 Unread post by **BuzZz** » Sat Apr 07, 2007 4:39 pm

If it ran without oil long enough to wipe out the top-end, chances are more than good it also ate up the bottom-end. I would have a very good look at the con-rod and crankshaft bearings, as well as the con-rod journal.

No sense in throwing all that money at a top-end unless the bottom-end is sound as well.

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Big Bore or just buy the parts?

Big bore 115 for a XR 100 or not

Big Bore or just buy the parts?