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Originally Posted by blownb310
Welcome to the boards Shane. 
Thanks for telling us about your E13S. Sounds like you have a B12 Sentra model and are quite knowledgeable about airflow and proper porting techniques. It's really nice to see that!
For those out there who aren't familiar with how kW numbers translate into horsepower, I did the conversion. 74 kW equals 101.38 hp! That's a really good number from a 1300 cc engine. Our E16S was rated at 69 h.p. from the factory. The E16i was rated at only one more.
Shane, what are you using for carburetion? Surely not the stock carb right? Are you running a header too?
Where did you get a copper head gasket? Is it solid copper or does it just have the copper rings around each cylinder? Any pics of your engine or car?
Cheers,
Mike |
Hi Mike!
Thanks for the warm welcome!
I did some research and found that I do have the b12 Sentra in the "faced lifted" sedan shape.
In response to your questions....
Im using the origional carb which is a Nikki twin barrel downdraft, 217260-88, but with modifications.
The moldings of the carb has faults in the venturies.
Where the two halfs of the carb come together, the bottom face of the venturi has portions that stick out.
Ive ground these down as to smoothen out the shape so that the air flows better.
Then the venturis were widened to de-restrict flow, with custom made butterflies to fit.
Rejetting was done two sizes up on the primary and three up on the secondary to compensate for the loss in vacuum due to the widening of the venturies.
On the intake runners, nothing else other than the port matching was done.
The copper head gasket is a sheet if copper of required thickness thats laser cut to and origional gasket template.
Ill get more info on it and get back.
Shane