GP150 or 200

[grandpa]

Hi Chaps,
I am after a 200 probably a Spaniard but if I did look at an Indian GP 200 is there any way of determining whether the engine is a true 200 rather than a small block
with a 200 kit without dismantling it? I.E any markings or extra strengthening ribs cut outs on fins etc
Thanks,
Grandpa

[MickYork]

Distance across cylinder nuts........
Inlet manifold studs........
Engine number.....

[Rich Oswald]

Distance across cylinder nuts........
Inlet manifold studs........
Engine number.....

Agree with the first two but wouldn't rely on the engine numbers,

Rich'

[grandpa]

Hi Chaps,
Thanks chaps ,but I would have to take cylinder cowl off to see cylinder nuts .I might be able to measure the inlet manifold studs on my gp 150 though and compare. I assume the distance across studs on a 200 is greater than a 150 but so would a 200 kit . This would be an Indian gp200 I might look at.
Thanks for your good ideas
Grandpa

[Adam_Winstone]

I'm not sure that any of the SIL 150 casings had the same reinforcement webs on the mag side engine mount, whereas the late/common 200 casings do.

[grandpa]

Hi Adam,
Thank you I will look into the webs on mag side.However,I have now received a reply to an inquiry about a Spanish Jet 200 with matching numbers and plan to look at it on Friday
Regards,
Grandpa

[Adam_Winstone]

http://thumbs3.ebaystatic.com/d/l225/pi ... 8936_1.jpg

Link should take you to an image of the later/common SIL 200 casing with the additional reinforcement webs on this mag-side engine mount lug (5 rather than the standard 3).