Author Topic: Head  (Read 876 times)

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Offline Buglet

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Head
« on: February 08, 2021, 12:28:26 PM »
   Here's a head you don't see every day, off a 900. 

Offline SP33DY

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Re: Head
« Reply #1 on: February 08, 2021, 03:06:57 PM »
Looks like an XR head to me.

Offline Hillside Motorcycle

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Re: Head
« Reply #2 on: February 09, 2021, 04:23:13 AM »
XR Head?
Otto Knowbetter sez, "Even a fish wouldn't get caught if he kept his mouth shut"

Offline Buglet

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Re: Head
« Reply #3 on: February 09, 2021, 05:28:36 AM »
    Close but no, it's was call a Thunderhead made in the 70's to bolt onto XL's

Offline sharkoilfield

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Re: Head
« Reply #4 on: February 18, 2021, 11:52:28 AM »
i had a search on eBay for a long time, never did see any

Offline DA71FX

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Re: Head
« Reply #5 on: March 26, 2021, 05:53:20 AM »
Wow, I have not seen a set of those since the late 90s...I really regret that I let a pair go back in 99......
93", 71 FX, 89" 76 FXE
96" Mongrel Stripped FL...WTF is a Milwaukee 8

Offline Burnout

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Re: Head
« Reply #6 on: March 26, 2021, 08:41:04 AM »
Thunderheads or XR heads are not the holy grail many think.

I've let lots of them pass me by, on purpose. 

Dual plug your stock heads and make sure the piston comes all the way up, then ride it like you stole it!
They don't call me Ironhead Rick just because I'm "hard headed"

Offline JW113

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Re: Head
« Reply #7 on: March 26, 2021, 10:01:16 AM »
The guy that did the headwork on my previous ironhead (Ironhead Tom, RIP), was a drag racer in southern Minnesota. Although I did not have him do this to my heads because of the cost involved, on his drag bikes he would weld up the ports to reshape and increase velocity. I don't recall exactly what he was getting in terms of HP, but do I recall it was a lot. Zippers also used to do some magic to get impressive numbers from ironheads. Hey, all it takes is money, right?
 :SM:

-JW
2004 FLHRS   1977 FLH Shovelhead  1992 FLSTC
1945 Indian Chief   1978 XL Bobber

Offline Burnout

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Re: Head
« Reply #8 on: March 26, 2021, 10:17:04 AM »
Anything can be made fast with the correct financial backing.

It doesn't take much to be faster than 95% of the bikes out there. You have to know when to shift too.  :scoot:
They don't call me Ironhead Rick just because I'm "hard headed"

Offline Hossamania

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Re: Head
« Reply #9 on: March 26, 2021, 10:24:19 AM »
Horsepower is in the heads. If you want to make a small fortune racing, start with a large fortune!

Anything can be made fast with the correct financial backing.

It doesn't take much to be faster than 95% of the bike riders out there. You have to know when to shift too.  :scoot:

Fixed that for ya...
Does this rag smell like chloroform?

Offline JW113

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Re: Head
« Reply #10 on: March 26, 2021, 12:15:44 PM »
Anything can be made fast with the correct financial backing.

OR, with a lot of skill and the right tools. I don't IH Tom spent a lot of money, but he sure spent a lot of time and had an well equipped shop.

-JW
2004 FLHRS   1977 FLH Shovelhead  1992 FLSTC
1945 Indian Chief   1978 XL Bobber

Offline kd

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Re: Head
« Reply #11 on: March 26, 2021, 08:29:59 PM »
“The only thing faster than cubic inches is cubic dollars “.  (Grumpy Bill Jenkins).  :wink:
KD

Offline JW113

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Re: Head
« Reply #12 on: March 27, 2021, 11:34:56 AM »
While that is probably true most of the time, has anyone beaten Burt Munro's land speed record? Old Burt had no money, but an awful lot of skill.

-JW
2004 FLHRS   1977 FLH Shovelhead  1992 FLSTC
1945 Indian Chief   1978 XL Bobber