View Poll Results: What should I do first?
88cc big bore kit and other engine mods.
5
100.00%
New paint, plastic, seat, and other cosmetic stuff.
0
0%
Voters: 5. You may not vote on this poll
hot tank substitute
Thread Starter
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New User
Joined: Mar 2004
Posts: 15
Likes: 0
From: North Dakota
hot tank substitute
Hey y'all,
I'm working on my Honda ATC70. It's a little 3 wheeler from 1973. I was wondering if you guys think that it would be safe for me to leave the valve guides in the head when I clean the engine out because I don't really have the knowledge needed to ream new valve guides. I also got another problem. I don't have access to a hot tank so I was wondering what you guys would use for a substitute that you might be able to find at Wal-Mart or some other common store like that.
Thanks,
Nick Strand
I'm working on my Honda ATC70. It's a little 3 wheeler from 1973. I was wondering if you guys think that it would be safe for me to leave the valve guides in the head when I clean the engine out because I don't really have the knowledge needed to ream new valve guides. I also got another problem. I don't have access to a hot tank so I was wondering what you guys would use for a substitute that you might be able to find at Wal-Mart or some other common store like that.
Thanks,
Nick Strand
Post Fiend
Joined: Mar 2004
Posts: 24,418
Likes: 3
From: San Francisco, Ca.
There must be a shop in your area that builds engines. Maybe they have a hot tank. Ask your local repair shops,speed shops or automotive machine shops.
I'd also think about stripping the head bare.
I don't remember, but is this head aluminum or iron?
Sorry I couldn't be of more help. Good luck
I'd also think about stripping the head bare.
I don't remember, but is this head aluminum or iron?
Sorry I couldn't be of more help. Good luck
Thread Starter
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New User
Joined: Mar 2004
Posts: 15
Likes: 0
From: North Dakota
Originally Posted by sierraben
I don't remember, but is this head aluminum or iron?
Thanks,
Nick Strand
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Post Fiend
Joined: Mar 2004
Posts: 24,418
Likes: 3
From: San Francisco, Ca.
Originally Posted by billy87
I'm pretty sure the head is cast iron but the valve guides aren't. I think I'm gonna end up replacing the valve guides. Would it be ok to keep the old valves and get just new guides and ream them out and put the old valves back in the new guides. Also one more question.....how much do you think it would cost to get the head hot tanked and then have the shop that hot tanks it also replace the valve guides and ream them out so that the old valves fit in them.
Thanks,
Nick Strand
Thanks,
Nick Strand
Fix it right the first time and you won't have to fit it again.
As for the valves, it depends on the condition of them. I don't really know much about those valves on your ATC.
Good Luck
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Brett Foote
Fleet Mechanic
Joined: Jan 2005
Posts: 1,413
Likes: 14
From: cape may county NJ
The head is aluminum the cylinder is cast iron just strip it down and soak it in carb cleaner,napa sells a carb cleaner called Macs comes by the gallon it is the real deal only soak for a few hours at a time if you leave it overnite it will be discolored but it will remove all carbon and gunk.As far as the valve guides go I dont think you will have to reem them because thay will be a little worn out and you might have to much play in the valve. check play with new valve installed all you might need is new valve seals.If you have a honda dealer (motor cycle or lawn mower) they can cut the valve seats for you its allways a good idea when replacing any valve hope this helps.
Glenn
Glenn
Elder User
Joined: Dec 2001
Posts: 800
Likes: 0
From: Ontario, canada
Hot tanking really sounds like overkill
Solvent,(like ordinary paint thinner) a stiff brush and some elbow grease will work as good as anything. YOu probably dont even have to take the valves out.
An old-school test for motorcycle valve seats was to turn the head over and fill the combustion chamber with diesel or solvent. If it seeped through, then it was time for a valve job, if not then you're good to go. You can easily put alot more into this old bike than it will ever be worth!!
Solvent,(like ordinary paint thinner) a stiff brush and some elbow grease will work as good as anything. YOu probably dont even have to take the valves out.
An old-school test for motorcycle valve seats was to turn the head over and fill the combustion chamber with diesel or solvent. If it seeped through, then it was time for a valve job, if not then you're good to go. You can easily put alot more into this old bike than it will ever be worth!!
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