1970 XLCH Sportster Ironhead
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Stage II
Joined: Jul 2008
Posts: 2
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1970 XLCH Sportster Ironhead
Does anybody feel like opening up a discussion on a partial rebuild of a 1000cc Ironhead? \\; The chain broke and completely shattered the right side of the lower end. \\; I am about to start the process of tearing it apart while I look for parts and would like a few resources aside from the manual if I run into any problems. \\; Not to mention that I am going to need parts and would like some good resources for those too.
Stellar HDF Member
Joined: Feb 2006
Posts: 3,035
Likes: 17
From: Houston Texas
RE: 1970 XLCH Sportster Ironhead
I just saw this post you made.
Did the rear chain put a hole in the crankcase/transmission?
If that is the situation, I would tread lightly on doing a rebuild on the engine unless you have another engine as a spare. If you need crankcases then the work and expense involved will be great. Better to sell such an engine for the parts than sink a pile of money into it.
Maybe I misunderstand the damage done to the engine...........pg
Did the rear chain put a hole in the crankcase/transmission?
If that is the situation, I would tread lightly on doing a rebuild on the engine unless you have another engine as a spare. If you need crankcases then the work and expense involved will be great. Better to sell such an engine for the parts than sink a pile of money into it.
Maybe I misunderstand the damage done to the engine...........pg
Road Master
Joined: Jun 2008
Posts: 1,078
Likes: 39
From: NW Florida
RE: 1970 XLCH Sportster Ironhead
I agree with piniongear. \\; The cost of replacement cases would be prohibitive. \\; Unless you have access to another set, part it out and buy another.
Tell us more - what is the problem[s]? What info do you need?
You need both of these ...
Factory service manual: 99484-78
Factory parts catalog: 99451-78B
Local indie bike shop, HD dealership, J&P Cycles, eBay, various internet sellers. Just put the part numbers into the Google and eBay searches.
You need both of these ...
Factory service manual: 99484-78
Factory parts catalog: 99451-78B
Local indie bike shop, HD dealership, J&P Cycles, eBay, various internet sellers. Just put the part numbers into the Google and eBay searches.
Last edited by IronMick; Aug 30, 2012 at 05:25 PM.
XLCH designates a kick start only Sportster. XLH [and others] all have electric start, and up to 1979 could have a kick start added on.
So, i am unsure of what you are looking for. Do you need a kick kit or an electric start kit?
So, i am unsure of what you are looking for. Do you need a kick kit or an electric start kit?
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3rd Gear
Joined: Dec 2013
Posts: 7
Likes: 0
From: pa
I have a 75 xlh right hand shift transmission numbers 34846 54A, I bought a 73 xlh transmission numbers 34845 54A, could someone tell me if the 73 will fit my 75, or am I just wasting my time?
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Where did you get those part numbers? They do not occur in the 99451-78B parts catalog.
A 1973 transmission is for right hand shift; 1975 is left side shift with the funky cross over parts.
I think that you can make it work but i do not know what parts will have to be changed. You may need to re-use some parts from 1975.
Another member may come along with better info.
A 1973 transmission is for right hand shift; 1975 is left side shift with the funky cross over parts.
I think that you can make it work but i do not know what parts will have to be changed. You may need to re-use some parts from 1975.
Another member may come along with better info.
3rd Gear
Joined: Dec 2013
Posts: 7
Likes: 0
From: pa
My bike is titled as a 75, and it is an original right side shift, no cross over.
Those numbers are of the access cover of transmission. My kick start spindle thing with that spring, won't fit the other one. I have a kick and electric.
My engine numbers*3A29292H5*
Those numbers are of the access cover of transmission. My kick start spindle thing with that spring, won't fit the other one. I have a kick and electric.
My engine numbers*3A29292H5*