Injector nozzle number.

[Lonnie]

Hi,
I did a search for this but couldn't find the answer.
I've found a place that will sell me rebuilt injectors but they claim they need the number off my injector.
I can't seem to find the number without pulling one, so was wondering if anyone knew what the number is on an 82 SD-22 or exactly where I could find the number?

Thanks,
Lonnie

[asavage]

Forum here at Injector Nozzle.

I have a picture of "12-1271" which are three loose injectors I have from a random '81-82 720 SD at the JY.

[later]

[asavage]

Nissan seems to call this out as part No. 16600-36W25, $122 new from Nissan.

[Lonnie]

Thanks Al,
Back in the 80's I had a 6.9 ford pickup. I had the injectors rebuilt on it & they put heavier springs in when they rebuilt them. I noticed an increase in power & mileage. Not sure if it was just due to the rebuilt injectors or the springs but the rebuilder said the heavier spring would help with atomization & I would get better performance.

What do you think?

Thanks again,
Lonnie

[asavage]

Yes, higher pop pressure can give better atomization of marginal or cold fuel. Hopefully, neither of these is your norm. Higher pressure (in the range that you'd be able to achieve with the OEM injector design) won't do a whole lot for decent fuel, IMO. Esp. on IDI engines like ours.

There is a problem, actually several, with raising the pop pressure above spec. The IP has to be able to cope with the higher pressure, and to charge the lines to that pressure in a reasonable amount of time. What can happen, as the pump ages, is that it takes longer to get to the pop pressure, which retards timing, and the problem is worse at higher revs of course.

Where you might want to go to higher pressure and larger injector orifices is when you are using a more viscous fuel than D2 or B100. I'll let you guess what "fuel" that might be

[Lonnie]

Thanks Al,
Yes, I've been reading with interest about the fellow driving to Alaska on straight waste Veggie. I've been considering going to a blend but just not sure yet. There are some good arguments on both sides of the fence, & some very heated!

Lonnie