80-84 injectors on an `86

[wewantutopia]

Has anyone ever done this? I was told they increase power a bit and require slightly less pressure to open. If they require less pressure to open, would there have to be any adjustments to the IP made?

[VanagonMark]

I thought they were the same application.

[inmytree]

I used lines off of a 82 rabbit for my 90 Jetta and had no issues...

[GreyRabbit]

The difference is between TDI and NA injectors as far as I know. The higher pressure injectors should give you better atomization of the fuel, a better burn and more power if anything.

[VanagonMark]

I used lines off of a 82 rabbit for my 90 Jetta and had no issues...

I've used turbo injectors, non turbo injectors
I can't find any difference

seems all standard to me

[inmytree]

I used lines off of a 82 rabbit for my 90 Jetta and had no issues...

I've used turbo injectors, non turbo injectors
I can't find any difference

seems all standard to me

I should have included the reason I had to use the lines off of an 82 rabbit for my 90 Jetta. I sent my IP for a rebuild, long story short, my IP would have cost a 100 bucks more rebuild due to it being a "high altitude" pump. I chose to have the vendor send me a already refurbed pump. That pump did not line up with my injector lines. As luck would have it, I had the rabbit sitting around, and presto, a perfect fit...

so, there are differences...

[Fatmobile]

I was pretty sure '82 lines wouldn't fit the '90 because of the delivery valves being longer.... but with an older pump on the '90 the older lines might work.

[tylernt]

I think a lower breaking pressure would have the same effect as advancing the timing a bit which may increase HP on an out-of-tune engine. But a properly tuned engine wouldn't benefit, in fact, a higher breaking pressure is more desirable as it gives better atomization.

[coke]

I swapped the longer delivery valves into my 1.5 pump to make it work on my 90 Jetta.

[inmytree]

I was pretty sure '82 lines wouldn't fit the '90 because of the delivery valves being longer.... but with an older pump on the '90 the older lines might work.

to be honest, I have no history on my "new" pump...what I do know is it fit and it's been running...

I was a bit miffed when attempted to put original lines back on and they wouldn't line up, but it worked out in the end...