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General Category >> Rubber Side Down! >> Exhuast bolt holes on cylinder head stripped
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Message started by Sej on 05/03/14 at 12:12:07

Title: Exhuast bolt holes on cylinder head stripped
Post by Sej on 05/03/14 at 12:12:07

I'm looking to buy a Savage, and have found a pretty good deal on 2002 with low miles, but the current owner says the bolt holes in the cylinder head where the exhaust header mounts are stripped. He's been riding it around with the header attached to the bike with a piece of wire to the frame. I didn't notice if the header clamp was still present and just dangling or not.

Would it be possible to drill out the holes a few millimeters larger and then tap for the next metric size up (thread/length)? What size are the stock bolts at that location?

Any problems I should be aware of on a bike that's been ridden like this for who knows how long? (aside from the likelihood of other stripped holes)

Thanks!

Title: Re: Exhuast bolt holes on cylinder head stripped
Post by HondaLavis on 05/03/14 at 13:20:31

Can you fix it? Sure. You could tap it or put a helicoil in it. However, that he's been driving it around like that makes me wonder what other shady maintenance he's done.

If it were me, I'd pass it up for another bike unless he prices it at or less than $1000. IMHO

Title: Re: Exhuast bolt holes on cylinder head stripped
Post by shorty on 05/03/14 at 14:37:08

I would have a professional install "HeliCoils" into the holes instead of tapping to a larger size (larger size will create problems)

If the bolts have broken (leaving the holes filled) remove the head and have a professional extract the broken bolts

Title: Re: Exhuast bolt holes on cylinder head stripped
Post by Sej on 05/04/14 at 14:43:53

The seller is asking for more, but I've talked him down to just about $1000. The bike has less than 4k miles on it, so hopefully there hasn't been much (bad) maintenance done on it.

For reference, I found out that the bolt size is M8 x 35 (or at least that's what Bike Bandit claims).

Title: Re: Exhuast bolt holes on cylinder head stripped
Post by S-P on 05/04/14 at 15:14:41

7F49464D42595F2C0 wrote:

With less then 4K miles you probably can't go too wrong unless he absolutely thrashed the engine. He's not too far out of range for even normal maintenance intervals. A 1,000.00 is a pretty darn good price.