XS1 head

Jack · Sep 29, 2019

Does anyone by any chance have one of these heads tucked away on your shelf ? Would like to get some
pictures of the intake port or possibly take a mold of the port. I know it's a lot to ask . Came on 256 motors, ports are different from 447 motor.

Mailman · Sep 29, 2019

These are some reference photos from my XS2 head, that I took when I was disassembling it for rebuild. If it helps any. It’s a 256 motor.

Mailman · Sep 29, 2019

http://www.xs650.com/media/albums/see-through-top-end.3111/

Jack · Sep 29, 2019

Mailman,
I appreciate it but the XS1 are different, the floor at the short turn is flat with the corners cut down,bowel and roof are also shaped different. Those photos are excellent,what did you use?
I had two in my hands at one time but didn't have a digital camera for photos. The casting in those ports are the best I've seen in along time besides the XS1

Mailman · Sep 29, 2019

Jack said:
Those photos are excellent,what did you use?

My trusty old IPhone 6. Haha! That phone is so old now, it’s obsolete, Apple doesn’t issue updates for it anymore, but it sure has a good camera. To take those photos I shined a very bright little LED flashlight in there, while I snapped the photos. Sorry they didn’t help you any.

Jack · Sep 29, 2019

Mailman said:
My trusty old IPhone 6. Haha! That phone is so old now, it’s obsolete, Apple doesn’t issue updates for it anymore, but it sure has a good camera. To take those photos I shined a very bright little LED flashlight in there, while I snapped the photos. Sorry they didn’t help you any.

You helped me out with your photo techniques when I up date the D thread,so thank you!

Ipa62 · Sep 29, 2019

From a XS1b. Yes the bottom of the port is flat at the short turn. That is a flashlight shining up through the valve opening, sorry the photos aren’t that great. Maybe tomorrow I can do better.

Jack · Sep 30, 2019

yes those are it, hopefully you can snap some better images. With some guide and boss work, those intake ports flow "Really Good" over later versions.

Ipa62 · Sep 30, 2019

First six are the right, last six are the left.

Ipa62 · Sep 30, 2019

hope this helps.

Jack · Sep 30, 2019

Thank you so much!

Oldnwiser · Dec 9, 2022

Mailman said:
http://www.xs650.com/media/albums/see-through-top-end.3111/

Jack said:
Thank you so much!

I filled my XS2 heads into the XS1 shape and made SSR and put thinner guide inserts that helped the velocity and flow from backing up. I f you make new castings that will work on the 447 block it would be a Great Leap Forward. And a rocker cap with a 1.4-1.5 ratio for the fingers? That would help with XS1- the B and 2 cams.

XS1 head

Jack

XS650 Guru

Mailman

Hardly a Guru

Mailman

Hardly a Guru

Jack

XS650 Guru

Mailman

Hardly a Guru

Jack

XS650 Guru

Ipa62

XS650 Addict

Jack

XS650 Guru

Ipa62

XS650 Addict

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Ipa62

XS650 Addict

Jack

XS650 Guru

Oldnwiser

XS650 Enthusiast

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