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Turbo power

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Voxonda:
According to SteveD I should open a new topic about my latest "brainwave", turbocharging one of my CB750 or in this case CB850.
My 'second' bike, the situp and beg one, will be treated with a Garrett T2 fed by a Mikuni HRS 42 carb.  Installation of the Turbo and other parts, like exhaust, oil feed and return will be done by myself. So that will be a challenge, since I know very little about Turbocharging. One thing I do know, that it is a effective way of filling the engine.
Will keep you posted.

Cheers, Rob

peewee:
Hi Rob,
 I think the turbocharger is likely to fill your engine full of valves and pieces of moltern pistons,
 I'm no turbo expert but i think the compression needs to be lowered and a 'safe' rev limit set to avoid turning your Honda engine into a minature Blast furnace.Good luck with your venture and let us know how you get on
Cheers
Peewee
 

Voxonda:
Hey peewee,

You've just shown me the down side of it all!! The cr will be lowered, but that depence a lot of how much 'boost' you're using. But it should/will be lowered to keep 'detonation' away. In the Garrett there's a boost-valve that opens if the boost is higher then preset. But I will be starting on the safe side to keep the engine in one piece.

Cheers, Rob

Voxonda:
In order keep the CR somewhere around 8.5 :1, I will be using the conrods of our sister, the DOHC750. These are approx. 1.5 m/m shorter, big- and small-end are the same size. Bolts are a bid stronger and the rods themselves look a bit beefier. I think that is a more advanced solution then placing a spacer beneath the barrel.
Still waiting for the Mikuni and the Turbo to arrive. Then the real work can begin.

Cheers, Rob

dave400:
Rob, sounds like you have a bit of reading and a lot of work ahead,  :o good luck with your new venture

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