Looking for 650ss head

Joined
Jul 7, 2009
Messages
18
Country flag
Hi all, I am looking for a 650ss head to complete a Manxman that I bought years ago without head, fenders or seat. I have other parts to trade. Hate to part out a manxman.

If you have any leads would appreciate that too.
 
Joined
Dec 30, 2012
Messages
116
Country flag
Hi, I don't have a head unfortunately but I would be very interested to hear about any spare parts that you might have for my Manxman. I'm also looking for a seat, exhaust pipes and silencers / mufflers and a few other parts. Cheers, Mike
 

johnm

VIP MEMBER
Joined
Feb 26, 2008
Messages
930
Country flag
Your going to have to really search the world for that. I tried more than 10 years ago and it took me 18 months to track down an SS head. Try going through all the old posts.
 
Joined
May 28, 2003
Messages
2,131
Country flag
This is a toughy for north americans. Pre commando stuff is kind of like a red haired step child. Yes it would be ashamed to "part it out". Selling it back to the brits would get you much more. Also trying to find a head in england will likely get better results though the price may kill you...
Temporarily you could use two other "small bolt pattern" NHT until you find the correct S650/136 head. 88SS/136 or R12/136 are candidates but also somewhat rare in US/canada.
details here: http://atlanticgreen.com/nhth.htm
When ken at full auto was starting his attempt at NHT head business, I strongly suggested he do the small bolt pattern heads along with the sickly RH4 replacements. No Go...to bad
Now with John/STS trying to revive the FA attempt, I would again would suggest that with the identical casting a 28.5mm intake port head/core with the correct small bolt pattern head finish machining would be appreciated by PRE 750 NHT folks. So many of these early heads have been butchered with ricky racer bigger ports and 1.5" intake valves. What a shame!
Early heads for spigotted cylinders are S650/136 and the later no spigot barrel/ heads are PN 25358 .
Upgrading to "no spigot" would seem favorable.
The brits seem to refuse to use the correct PN to identify these heads. Be prepared to use baby talk descriptions...LOL
 
Joined
Apr 20, 2011
Messages
4,619
Country flag
I acquired a down draught alloy head for my 500 off flea bay over a year ago, so they are still out there. Your best bet is to log into the English Ebay website and feed in 650SS cylinder head and put favourite so that they inform you via e mail if one appears. HTH.
 
Last edited:
Joined
Apr 20, 2011
Messages
4,619
Country flag
Heres one at Les Emery's Norvil.

Clearly made out of gold.
Hes got 2 on there, both minus rockers, one without exhaust port threads, but at a 4 figure sum, he must see you coming! :( this is not good, if we stand by and watch him gleefully line his own pockets.
 
Joined
May 28, 2003
Messages
2,131
Country flag
Yes. Is your engine, spigot or non spigot?
63 650SS complete engine/ S650/136 head *** engine taken off 70 commando !
61 650D, 88SS /136 head,
59 88-being built as faux 62 SS, spigot 88SS barrels, S650/136 head

One of my atlas, a 66, is the first no spigot NHT I own,
 
Joined
Jul 7, 2009
Messages
18
Country flag
Hi, I don't have a head unfortunately but I would be very interested to hear about any spare parts that you might have for my Manxman. I'm also looking for a seat, exhaust pipes and silencers / mufflers and a few other parts. Cheers, Mike
 
Joined
Jul 7, 2009
Messages
18
Country flag
I am afraid I am a little parts challenged on this project too. Mike from Mighty garage on YouTube is getting pipes and silencers reconstructed in Washington state. I don't do social media but if I can find out how to contact him that is probably the best approach for those since the silencers are a one bike part and not likely to be found otherwise. Apparently the shop he went to digitized an original set and is doing a near exact replica.

I believe the seat is different from a dominator standard seat. I have one that has been modified but I am not sure how badly. Do you know if the rear fender is different from a narrowline dominator fender? I have heard that the dzus fastener to secure the rear of the seat is in a different place on a manxman vs a dominator but have never confirmed this. See
I would be pleased to correspond on this rather daunting project. Somewhere I have a photocopy of the partslist for the manxman but having just finished a move today, it may take a while to find it. Let me know if you would like a .pdf.

I have been collecting "projects" for years and retired today so plan to put various bikes together.

Best, Michael
 
Joined
Jul 7, 2009
Messages
18
Country flag
This is a toughy for north americans. Pre commando stuff is kind of like a red haired step child. Yes it would be ashamed to "part it out". Selling it back to the brits would get you much more. Also trying to find a head in england will likely get better results though the price may kill you...
Temporarily you could use two other "small bolt pattern" NHT until you find the correct S650/136 head. 88SS/136 or R12/136 are candidates but also somewhat rare in US/canada.
details here: http://atlanticgreen.com/nhth.htm
When ken at full auto was starting his attempt at NHT head business, I strongly suggested he do the small bolt pattern heads along with the sickly RH4 replacements. No Go...to bad
Now with John/STS trying to revive the FA attempt, I would again would suggest that with the identical casting a 28.5mm intake port head/core with the correct small bolt pattern head finish machining would be appreciated by PRE 750 NHT folks. So many of these early heads have been butchered with ricky racer bigger ports and 1.5" intake valves. What a shame!
Early heads for spigotted cylinders are S650/136 and the later no spigot barrel/ heads are PN 25358 .
Upgrading to "no spigot" would seem favorable.
The brits seem to refuse to use the correct PN to identify these heads. Be prepared to use baby talk descriptions...LOL
I have a couple of 650 standard heads so could use that but it screws up the carb mounting and I am not ready to restore yet, instead just collecting parts for the resto. Thanks a lot. M
 

gortnipper

VIP MEMBER
Joined
Nov 11, 2013
Messages
3,120
Country flag
I am afraid I am a little parts challenged on this project too. Mike from Mighty garage on YouTube is getting pipes and silencers reconstructed in Washington state. I don't do social media but if I can find out how to contact him that is probably the best approach for those since the silencers are a one bike part and not likely to be found otherwise. Apparently the shop he went to digitized an original set and is doing a near exact replica.

I believe the seat is different from a dominator standard seat. I have one that has been modified but I am not sure how badly. Do you know if the rear fender is different from a narrowline dominator fender? I have heard that the dzus fastener to secure the rear of the seat is in a different place on a manxman vs a dominator but have never confirmed this. See
I would be pleased to correspond on this rather daunting project. Somewhere I have a photocopy of the partslist for the manxman but having just finished a move today, it may take a while to find it. Let me know if you would like a .pdf.

I have been collecting "projects" for years and retired today so plan to put various bikes together.

Best, Michael
@Mike T is one and the same
 
Joined
May 28, 2003
Messages
2,131
Country flag
I am afraid I am a little parts challenged on this project too. Mike from Mighty garage on YouTube is getting pipes and silencers reconstructed in Washington state. I don't do social media but if I can find out how to contact him that is probably the best approach for those since the silencers are a one bike part and not likely to be found otherwise. Apparently the shop he went to digitized an original set and is doing a near exact replica.

I believe the seat is different from a dominator standard seat. I have one that has been modified but I am not sure how badly. Do you know if the rear fender is different from a narrowline dominator fender? I have heard that the dzus fastener to secure the rear of the seat is in a different place on a manxman vs a dominator but have never confirmed this. See
I would be pleased to correspond on this rather daunting project. Somewhere I have a photocopy of the partslist for the manxman but having just finished a move today, it may take a while to find it. Let me know if you would like a .pdf.

I have been collecting "projects" for years and retired today so plan to put various bikes together.

Best, Michael
You would do better to move this to "other Nortons" section and do a few searches.
All these manxman vs 650SS hardware specific issues have been hashed over (answered) many times.
 
Joined
Apr 20, 2011
Messages
4,619
Country flag
I am afraid I am a little parts challenged on this project too. Mike from Mighty garage on YouTube is getting pipes and silencers reconstructed in Washington state. I don't do social media but if I can find out how to contact him that is probably the best approach for those since the silencers are a one bike part and not likely to be found otherwise. Apparently the shop he went to digitized an original set and is doing a near exact replica.

I believe the seat is different from a dominator standard seat. I have one that has been modified but I am not sure how badly. Do you know if the rear fender is different from a narrowline dominator fender? I have heard that the dzus fastener to secure the rear of the seat is in a different place on a manxman vs a dominator but have never confirmed this. See I would be pleased to correspond on this rather daunting project. Somewhere I have a photocopy of the partslist for the manxman but having just finished a move today, it may take a while to find it. Let me know if you would like a .pdf.
I have been collecting "projects" for years and retired today so plan to put various bikes together. Best, Michael
There has been a lot of controversy on this forum and elsewhere that the Manxman muffers are purely Norton muffers with the raised welded seams turned round 90 degrees with another mounting bracket welded on to it. Can you confirm?
PS wouldn't be allowed now due to Mr 'eath and ' afely over those bacon slicers out in the air.
 
Joined
Dec 30, 2012
Messages
116
Country flag
I am afraid I am a little parts challenged on this project too. Mike from Mighty garage on YouTube is getting pipes and silencers reconstructed in Washington state. I don't do social media but if I can find out how to contact him that is probably the best approach for those since the silencers are a one bike part and not likely to be found otherwise. Apparently the shop he went to digitized an original set and is doing a near exact replica.

I believe the seat is different from a dominator standard seat. I have one that has been modified but I am not sure how badly. Do you know if the rear fender is different from a narrowline dominator fender? I have heard that the dzus fastener to secure the rear of the seat is in a different place on a manxman vs a dominator but have never confirmed this. See
I would be pleased to correspond on this rather daunting project. Somewhere I have a photocopy of the partslist for the manxman but having just finished a move today, it may take a while to find it. Let me know if you would like a .pdf.

I have been collecting "projects" for years and retired today so plan to put various bikes together.

Best, Michael
Hi Michael, thanks for your note. I have just sent you a message / conversation with my contact details and would be happy to chat / email. Best wishes, Mike
 
Joined
Feb 18, 2018
Messages
326
Country flag
SHould definitely be a spigot barrel and head. I would take a crack at milling the spigot out if all I could fine is a not spigot head. Would scare the S**t out of me but should work.
I have a head with 69mm diameter recess and 26.5 diam inlet ( steel stubs set into head)- casting no. is 25319 and has one valve seat missing, and one with same casting no, with 74mm recess and standard 28 inlet tracts. Both are available from here in UK.
 
Joined
Apr 20, 2011
Messages
4,619
Country flag
Hi, I don't have a head unfortunately but I would be very interested to hear about any spare parts that you might have for my Manxman. I'm also looking for a seat, exhaust pipes and silencers / mufflers and a few other parts. Cheers, Mike
Muffers for a Manxman are I believe unobtainable, however they apper to be as per standard 650SS/ Atlas muffer turned 90 degrees with a mounting bracket welded at the appropriate place. See earlier video on this page.
 

Top