WTB CB 175 Head

[adriannarnold]

Hey guys,
One of the spark plug ports on cb175 is in dire need of repair. The threads are barely hanging in there. Well a local shop took a look and said it would be about $300 to repair it. Rather than throw $300 at it I would rather just buy another head and swap it out.

Anybody have a head in decent condition they are willing to part with for cheap?
Let me know. Thanks

- jonnyTHUNDER

 

[Big R]

Funny you bring this up - I was digging around in the garage last week and found a head from a vertical 175. I'll check the condition of it in a day or two, but if it's any good I'll sell it cheap.

 

[adriannarnold]

Awesome man,
Your a life saver ;D

 

[pacomotorstuff]

You used to be able to get helicoil spark plug thread repair kits for about $18.00 from most auto supply and some small engine places. Your machine shop must really like reaming you or they figure they're worth 275 bucks an hour.
Regards,
Pat Cowan,
Vintage Motorcycle Fiberglass

 

[pacomotorstuff]

As a follow up to my earlier rant, here's a listing from ebay.com I just copied. I'm not a shill for these guys, just providing information.
"fix-a-Thred is a simple, cost effective system for repairing damaged or worn threads. Create stronger than original threads. Tap is first guided by old stripped threads and then the heli coil threads begin. Oversized drill is not needed with this kit. Inserts and taps are interchageable with all other Helicoil thread insert systems. Inserts are stainless steel. Includes 10 inserts, tap and insert tool.

Our company rebuilds and modifies off road race bike and ATV engines to match your needs at prices and leed times that are unusual in this industry. We rebuild and offer maintenance on cylinder heads using our incredibly accurate Rottler seat and guide machine specially tooled for race bikes. Racer's E.R. offers one of the largest dirt bike mail order rebuilding services in the country. Located in Saint George, Utah. Brent 435-668-7776".
The little kits that I used to get only had 2 helicoils - this kit has 10, which is probably 5 times as many as you'll ever need. Even with the cost of the kit and the shipping, probably saves your well over $200.00 from your machinist's quote.

 

[adriannarnold]

Pacomotor,

Thanks a bunch for your help. I had this done to my cb350 a while back and the shop only charged my like 30 minutes of labor. I will have to call around.

 

[adriannarnold]

Hey guys,

I am thinking about going the helicoil route. How do I know what "size" to get? Any tips would be super helpful too. Thanks

 

[adriannarnold]

Re: WTB CB 175 Head or should I helicoil it

So I have been having the worst luck trying to find a 12mm helicoil kit locally.

Seems like everyone only carries 14mm. Which unless I am blind or just confused the D8HA spark plug for cb175's is 12mm with a 1/2 reach. I am assuming this is the size helicoil I need. ????