Hi all!! I have race car datsun cherry e10 and iam going to do new race engine to it. Any tips to good race engine? My last engine was 146hp and 156 torgue. That engine distroyed when rod get shot. I did have 78mm ross racing piston, camsshaft lift 11.8mm 300 degree. There some infoa old engine.

Is this your cherry? Looks great! X-R1?








Nice 2 door here:

Im sure 146hp is a great number and besides making sure future rods
dont let go by using better conrods you might look into something
similar in what Lemonhead has done and go for 83mm ca18de pistons
this time by offset boring 2/3 and sleeving 1/4.
CA18de pistons need about .5mm off them to make them flatops
and you would best try to duplicate some of the best Active
chamber designs on current corvette 600+hp heads for good tumble
and swirl all in one. I can imagine an extra 200cc would be enough
on what you had already though.

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No That is my frend e10 racer. Here is my racer photos.

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D, that chamber desighn isetn intirely relivant as the exhaust gose out in the oposite direction.

it doesnt matter for the exhaust,
the inlet charge is the main issue.

yeah but dosent the draw effect of extractors and overlap play a big part?

When you apply some logical thinking the only difference between a crossflow and non crossflow design is heat soak under inlet manifolds with one design,Air/fuel mix is sucked in follows piston down the bore then is pushed upwards and compressed then ignited pushing piston downward and after a set point exhaust opens,do you think that after all that the spent gases give a damm which side the exhaust port is on.
That type of thinking is one of the greatest traps when it comes to asessing whether an engine will make a good race motor or make good power,just have a look at what they are achieving with some of the early Volvo non crossflow engines power wise .who needs 4 Valve or DOHC.

Connor also speedway slant four engines of many top contenders are non crossflow
with the same combustion chamber. These are especialty aftermarket heads designed
from scratch to be non-crossflow. Like Coxsteve said heat soak is the only issue
but depends on the application.

I think I need 2 talk 2 u guys about ur racing cherrys!