98xjclassicmc
NAXJA Forum User
- Location
- AZ
Just wondering what fuel injectors are worth the cost for an upgrade on my 1998 Classic 4.0? Is a 12 hole better than a 4 hole?
K fab doesn't have a very good rep on naxja.
Yes, multiple people have claimed they're selling the chinese fake-bosch injectors.
JHC7399 over on CherokeeForum.com sells refurbished, flow matched 4-hole Bosch for a good price. Lots of people reporting good luck with those (myself included)
If both 4 hole and 12 hole injectors flow 24 Lbs/hr then all things considered your XJ is not going to run faster or jump higher because...24 Lb/hr it's what they flow. That said 12 hole injectors make sense. More smaller holes = more finer spray= easier and more complete combustion.
If both 4 hole and 12 hole injectors flow 24 Lbs/hr then all things considered your XJ is not going to run faster or jump higher because...24 Lb/hr it's what they flow. That said 12 hole injectors make sense. More smaller holes = more finer spray= easier and more complete combustion.
If it was only that simple! 12 hole injectors will be easier to foul internally/externally.
Example comparing "x" flow rate injectors(not real numbers)"
1 hole injector- (1) 25 micron hole
4 hole injector- (4) 5 micron holes
12 hole injector- (12) 1 micron holes
The 12 hole's are "snake oil" but I've had excellent results with the 4 hole injectors from these guys. I've got several sets from them.
https://precisionautoinjectors.com/collections/jeep-injectors
12 hole do make sense, except it seems they're all chinese crap.
4 hole refurbished Bosch are still the best choice.