Injector sizing
Bob Moon
fzrider at yahoo.com
Mon Oct 18 15:53:27 GMT 1999
> There are some really nice units out there but I still haven't seen
> anything I like(under $5000.00) better than a GM computer for a daily
> driver,,,it offers you closed loop for better gas mileage, spark knock
> control and even checks for octane upon start up to just name a few.....the
> downside is without software to make the job easier you have to do a bunch
> of work in hex once you locate the tables..(the breakdown of the 7730 is
> completely available) Use any manifold you want, get the correct size
> injectors(we can help with that) Use a Gm distibutor and sensors,,,,you can
> buy an eprom burner and erasure cheap on ebay( http://www.ebay.com ) do a
> search under eprom....I will go into further detail on how to do this job if
> you are interested...I am currently doing a 68 camaro with a 396 multi
> port(my own, basically a tunnel ram and a custom plenum) and am even having
> the GM 7730 control the fuel enrichment and spark table for the
> nitrous(still working on that but close) This car should run 11's without
> nitrous and 10's with(traction a factor)......ttyl
> - -Carl Summers
> p.s. you can do this very reasonable and have an awesome RELIABLE
> system.....check the aftermarkets failure rate....then think again about
> using a proven GM system......
Hmm. Speaking of correct injector sizing, how can I find the correct size for
my Ninja 900? I was performing some calculations, and it appears the bike has
airflow similar to that of an LT-1 or modified Mustang (72mm single-plate TB,
52mm dual-plate TB). Does that suggest that I would need the same size
injectors? I know stock Mustang 5.0s have 19lb/hr injectors, and those using
70mm TBs typically have 24lb/hr squirters. Dunno what Corvettes and Camaros
use.
Also, any idea on how to set up an initial fuel map? I'm working out a system
to use closed loop below 1/2 throttle and 6000 RPMs, then go to a mapped open
loop above either entry test. However, I don't wish to kill the 900
immediately when I fire it up... I was thinking I could find the correct
injector, then look up (somehow) the engineering specs for said injector, and
perform some calculations to get the (hopefully) required PW for the given
airflow.
Thanks,
Bob Moon
'99 Dodge Durango - Brutus
'92 Shadow 1100C - The Shadow
'85 GPz900 - Phoenix - Test Bed
'82 XL250R - Frankenstein
'81 YZ125H - The Wiz
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com
More information about the Diy_efi
mailing list