Subject:
[FlyRotary] fuel injector prices
Some
folks say bigger is better; others say size doesn’t matter – but
the reason we use the 550 cc/min injectors is because they come with the
engine, and replacements are very spendy. Al
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Take
a look in the Mustang magazines: 38 and 42 lb injectors sell for between
$295 and $395 for a set of eight. So call it $200 for a set of 4 if you
split the costs with someone else. Brands vary, but are usually
Bosch. I'm going to start with 38 lb injectors at 38 PSI - should be good
for about 230 HP at 80% duty cycle and 0.5 BSFC. Would also be good for
~245 HP at 44 psi. Note that if NA these will not be working very hard at
cruise altitudes. If turbo I would probably go with the 42's just to keep
the duty cycle a little lower.
Ken
P.
I was referring to
injectors that fit the stock primary fuel rail. As I understand it you
are pretty much limited to the Mazda (Nippon-Denzo, I believe) injectors, and
they are over $200 each, and the 20B needs three. I have 50 lb/hr (made
by Rochester) in the secondary rail that were only
$49 each.
Al