Help Modifying Bosch 1600cc Injectors

My5ABaby · 11-29-2011, 04:25 PM

So the boring/eclips are for the top? If so I think (hopefully) I have that part set. If not I'm screwed because I already modified it.

For the bottom, I can just pop the current pintle cap off and put on stock grommets?

C. Ludwig · 11-30-2011, 02:43 AM

Quote:

Originally Posted by My5ABaby

So the boring/eclips are for the top? If so I think (hopefully) I have that part set. If not I'm screwed because I already modified it.

For the bottom, I can just pop the current pintle cap off and put on stock grommets?

Yes. The top o-ring diameter of the EV1 injector is 14mm. The stock injector and rail is 11mm. So, open up the rail to 14mm. You need to use the e-clip to allow the you to compress the injector against the bottom grommet, just like the stock injector does. If you've already cut up the injector, this method won't work.

RETed · 11-30-2011, 04:44 AM

If the tops are already cut, then the modified Bosch fuel injector will sit higher than the stock fuel injectors.
This is why a "custom" lower grommet is used to take up the extra space now there.
With the Bosch modified with the tops cut, the fuel rail opening will sink all the way to the newly cut top.
The stock fuel injectors use that stupid "insulation" grommet that just gets compressed and warped in that area.
We typically use the "triple o-ring" trick at the top to seal the fuel rail on the top.
I keep a short length of 10mm I.D. silicone hose or 3/8" fuel hose to cut to length just to seal off the bottoms to the engine.
The newly modified Bosch fuel injectors will sit about 1/8" higher, which means that any stock type lower (sealing) grommet will not work - i.e. not seal correctly.

-Ted

11-29-2011, 04:25 PM	#1
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 2,377 Rep Power: 20	So the boring/eclips are for the top? If so I think (hopefully) I have that part set. If not I'm screwed because I already modified it. For the bottom, I can just pop the current pintle cap off and put on stock grommets? __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."