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OS 120 FS Surpass mk 2

looking for bits

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Engine Doctor13/04/2018 18:33:54
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1968 forum posts
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Hi all . I am looking for a back[plate and inlet manifold and exhaust stub/adaptor for an OS 120 FS Surpass Mk2.. Back-plate has a short carb mounting on the left hand side of the back-plate unlike the later /current model with a longer stalk on the mounting . I have tried a few wanted adds in classifieds but no success so thought I'd ask here ?

If you can help please PM me .

If asking on forum is not allowable in the forum rules then moderators please delete.

Regards

Jon - Laser Engines13/04/2018 18:44:27
3834 forum posts
149 photos

Would the backplate from an ASP 180 work? if i remember rightly they are the same size crankcase and it has a very small carb mount block. Could be worth investigating. I have an ASP 180 kicking about at work somewhere, i can get some photos of it if you like.

Ron Gray13/04/2018 19:36:08
887 forum posts
231 photos

Yeah, but can you find it Jon😉

Bob Cotsford13/04/2018 19:48:08
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7269 forum posts
415 photos

Mk II was the metal pump version. I have a complete engine sitting doing nothing but I have no intention of breaking it for spares, sorry ED

Jon - Laser Engines13/04/2018 21:45:45
3834 forum posts
149 photos
Posted by Ron Gray on 13/04/2018 19:36:08:

Yeah, but can you find it Jon😉

errr ill get back to you

Engine Doctor14/04/2018 09:35:19
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Posted by Jon - Laser Engines on 13/04/2018 18:44:27:

Would the backplate from an ASP 180 work? if i remember rightly they are the same size crankcase and it has a very small carb mount block. Could be worth investigating. I have an ASP 180 kicking about at work somewhere, i can get some photos of it if you like.

I'd appreciate that John if you get a chance. I have looked on Ripmax site for spares and they are very limited for these older engines. It's slightly as this engine ,apart from the broken or missing bits is in excellent condition . I'll leave it for a while and if no bits turn up I'll break it for spares, keeping others running.

Yes it would be the Same Mk as the metal pump version, silver rocker cover. Great engines and IMHO better quality than the latest offering.

jrman14/04/2018 10:01:59
302 forum posts
3 photos

I've been looking for a replacement pump unit (metal not plastic) for an OS 120 MkII engine. If anyone has one I'd be pleased to hear about it.

Jon - Laser Engines14/04/2018 10:03:41
3834 forum posts
149 photos

ED do you have a photo of the old/broken one you can put up?

Engine Doctor15/04/2018 09:15:00
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1968 forum posts
19 photos
Posted by Jon - Laser Engines on 14/04/2018 10:03:41:

ED do you have a photo of the old/broken one you can put up?

Hi John yes I will get a pic on as soon as , possibly this evening .

Manish Chandrayan16/04/2018 12:23:10
427 forum posts
56 photos

ED did you check with Just Engines? if not the OS, they usually have spares for the ASP

Engine Doctor16/04/2018 19:58:47
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1968 forum posts
19 photos
Posted by Manish Chandrayan on 16/04/2018 12:23:10:

ED did you check with Just Engines? if not the OS, they usually have spares for the ASP

Thanks Chandrayan have looked on all websites I can find and the only 120 in ASP,SC are the same as the Mk 3 OS 120 and will not fit.

Mods. I have put pictures of backnplate on my album but can't see them on list when wanting to put in a post. All older pics are fine but latest of back plate don't show . Any ideas ?

cymaz16/04/2018 20:05:00
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7634 forum posts
981 photos

 

 

Happy to help

cd4eb19a-b55a-4525-a4b8-fe068d79bb2d.jpeg

Copied your photo into a spare album of mine....I had no problems

 

 

Seen THIS ?

Edited By cymaz on 16/04/2018 20:06:27

Edited By cymaz on 16/04/2018 20:14:05

Jon - Laser Engines16/04/2018 20:49:07
3834 forum posts
149 photos

I checked the asp 180 and no joy, its more in the middle than that

Engine Doctor16/04/2018 22:20:58
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1968 forum posts
19 photos

Thanks Cymaz. I can view the pics in my album but can't put them in a post .

Hi John thanks for checking I thought it was a long shot .. A few bits of asp fit Is no problem but others are just slightly different . I will keep looking for a while .

Thanks again for help.

E.D.

Manish Chandrayan17/04/2018 02:24:04
427 forum posts
56 photos
Maybe someone handy with design can do it and then print the backplate?
Engine Doctor17/04/2018 20:39:56
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1968 forum posts
19 photos

Thank for all help band suggestion. Thanks to a friend James who found an old broken pumped OS 120 who had a inlet manifold and a carb that fitted it I then purchased a SC back plate that fits perfectly so all good.

I am still looking for the steel exhaust stub that screws into the head so if anyone has one please pm me.

Regards

E.D.

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