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Finding a new 125 head
Posted: Wed Jul 27, 2016 8:56 am
by DGardner
This is some of the head's I've picked up to see what will work on my 125. Some are are cool and show promise and some not so much.....but what the hell I'm trying.
Re: Finding a new 125 head
Posted: Wed Jul 27, 2016 9:02 am
by DGardner
One more 125 head and a early super rat cylinder with what looks like a DG head.
Re: Finding a new 125 head
Posted: Wed Jul 27, 2016 9:29 am
by dirtsquirt80
look at an early yz 125 head maybe 1974 radial and the bolt pattern looked close to a late hodaka
Re: Finding a new 125 head
Posted: Thu Jul 28, 2016 8:34 am
by Kels
OH YA
Re: Finding a new 125 head
Posted: Thu Jul 28, 2016 8:43 am
by Bullfrog
Back in the 1970's Harry Taylor did a dyno comparison between the stock Hodaka head and a Zundapp 125 radial head modified to have the same combustion chamber/squish band conformation. The dyno room had a large forced air fan system to provide flow for extended run-time dyno tests. He reported finding no significant difference in cooling between the two heads.
With that in mind, I'm sure there are ways to improve cooling with finned (air cooling) type heads . . . but the stock Hodaka head does a pretty good job.
Ed
Re: Finding a new 125 head
Posted: Fri Jul 29, 2016 2:56 pm
by viclioce
There are a few heads on eBay right now too! Both 100cc and 125cc varieties. Some are steals, some are deals, and some are unreals!!! ; D Victor