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Anyone dynoed an old spec Pobjoy steroid motor?
fullnoise - April 5th, 2004 at 05:15 PM

Yes I'm talking about a Stan Pobjoy 1916.

If you have one and you are reading this post:

Have you had it on a Dynodynamics dyno in shootout mode?

If so how much horsepower did it make?

I'm really interested in finding out how far I can push my engine which is of similar specification.

I think I can squeese out another 3 hp to get 90 out of it but that's it without changing heads.

Alternatively does anyone have a quarter mile time for this engine in a full weight street car with a regular pulley?

Thanks in advance. CT

Bizarre - April 5th, 2004 at 07:46 PM

140 with 2 belts on and one of the heads were cracked! :vader

vwrallycar - April 5th, 2004 at 08:12 PM

whats the shootout mode mean with regards to the dyno?

Dannyboy - April 5th, 2004 at 09:13 PM

Whats the cost for one of these motors ?

Ta Dan:):)

jakjones - April 5th, 2004 at 09:30 PM

Quote:
Originally posted by blue74l
140 with 2 belts on and one of the heads were cracked! :vader



ha ha ,
that was in standard trim before the 30hp dyno tune !!

must be all in the machining

fullnoise - April 7th, 2004 at 05:19 PM

Hmmmm. Well I guess that's a no.

I highly recommend it. Tuning is the cheapes horsepower you can buy.

AdrianH - April 7th, 2004 at 08:20 PM

Something to think about - A/f ratios at the exhaust outlet, or collector is an average of all the cylinders.

If you want to get it spot on, find a hill on a free afternoon, read the plugs at various RPM runs, and tune each cylinder, I would guarantee that you dont end up with the same jets in each throat.

johny rotten - April 7th, 2004 at 09:19 PM

Take it some one who has the correct gear and know how, obviously not the builder.:P:P:P:P:P