fuel injectors - single hole vs. four hole (spray pattern differences and the net effects)

8

88RedLX

Club Member
I've got a pushrod smallblock Ford and anticipated using some four hole Bosch injectors that I've got in my posession, but I've been doing some reading/research and there seems to be opinions about the broader spray pattern of the four hole units causing issues (excessively wetting down the port walls). However, no one can seem to provide any data that supports claims of them causing problems.

I've seen the Youtube videos comparing them on a test stand and I understand the concept, but does anyone have any first hand experience with issues related to using these on a pushrod engine (the claim is that the wider spray pattern was developed for modular engines with the wider intake ports...hence the broader spray pattern)? Or is it simply speculation and B.S.?

Any input is greatly appreciated.

Thanks.
 
I'm using a set of 42# Racetronix Lucas 3 holes in my car right now and they work great. They were easy to tune. Right now I have mid to high 14's at cruise and idle with 11.5 to 11.0 under boost for A/F. Not sure about the 4 hole Bosch EV3 But I like what I have.
 
94 Drop said:
I'm using a set of 42# Racetronix Lucas 3 holes in my car right now and they work great. They were easy to tune. Right now I have mid to high 14's at cruise and idle with 11.5 to 11.0 under boost for A/F. Not sure about the 4 hole Bosch EV3 But I like what I have.
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94 drop.....im going to get a maga squirt ecu for my car, know anything about tuning these?
 
I just switched from a set of fat body 24's to the slim body 4 hole 30#'ers and so far they are GREAT. As 94 drop stated with his, these were also easy to tune in. Granted the car hasn't been driven alot but no issues as of yet.
 
Thanks for all the replies.

Similar to TooSlo86, these are four hole 30# units (EV6 body), but with a USCAR connector (original equipment on 2000 Cobra Rs) that I would be using.

I just spoke to Lidio @ Alternative as he will be tuning the car...and he said not to worry about it. I guess we will see.
 
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