Does anybody on here run Bosch III injectors in their TPIS Bigmouth intake? Did you have any fitment issues with them?

 

I would like to know also

 

You can run a double O-ring on the injector.

 

Here's a pic;

 

Is this for the TPIS Bigmouth

 

Edelbrock High Flow,Accel, and TPIS bigmouth are all the same. In fact, I think Edelbrock is the same as TPIS.

 

Run them the way they come. No need for the extra o-ring unless it's a stock tpi manifold when the bosch d111 would requier a extra o-ring as a spacer or an adapter fitted on the bottom like I'ev seen posted on this forum. Do a search.

 

Who is right on this, oring or not

 

Not...

 

You need the extra o-ring no matter what. The Bosch lll is shorter than the original factory injector and if you are not carefull you are setting yourself up for a fuel leak and a posible fire.

 

IMO, the one that's right is the one that's checked this out and done it. Watch this video;http://www.youtube.com/watch?v=O4rMK...eature=related

 

Nice vid that I saw before. Looks like a stock TPI manifold to me. Somehow FIC always gets some sort of plug in these threads. I can see the same thing on CV. Anyhow, install them the way you feel comfortable. Whatever way works for you go with it.

 

I got a set of bosch III's for my car from Injectors Plus and had no idea I had a big mouth till I tore it all apart. Installed it with single o-rings no problem. I can't remember but John from injectors plus said to either do them manifold first or fuel rail first. I'm sure if you called he would tell you.
Good luck!

 

The double oring set up/or our adapter willl not fit the edelbrock manifolds, the injectors will sit too high. You need to use the standard bosch lll's with the edelbrock set up. We have sold the bosch lll's to customers with the tpis bigmouth. They tell us that they need the bosch lll that is the same length as the stock tpi injectors but to be on the safe side we send the injectors with the double oring set up and if they sit too high you just need to snip the oring off. When installing your injectors if there is a question do the same thing...either way you will be fine

In our experience and after selling a "ton" of these injectors, they need to be installed into the intake manifold first. Every single time we receive
a call from a customer complaining that the injectors were leaking from the rail side was due to an installation issue. When installed into the intake
first the problem is always resolved.

We posted installation instructions on the bosch lll's and proper placement of the second oring on this forum a couple of years ago. If you would like me to repost just let me know.

 

Southbay,

You forget our discussion from about 6 months ago. The Edelbrock does require the double o-rings. Not sure about the TPIS. See the link for more info on the Edelbrock.

https://www.thirdgen.org/forums/tpi/...s-running.html

 

I purchased the Bosch III from southbay with the adapter and i have the edlebrock Intake and yes they sat up to high in the fuel rail but all i did was put .080 thick washers under the fuel rail where it mounts to to intake manifold and that fixed the problem.

 

Accel manifold here with Bosch III.....Used the extra O-ring.

 

I remember only too well. We have made a notation in all of our adds for all bosch lll's for the tpi set up that if you have an aftermarket intake to please contact us. For that reason we have had the opportunity to speak with alot of our customers. It turns out that the Edelbrock does not need the double oring set up or our adapter....I now know that for a fact.
I am almost 99% sure that the tpis bigmouth does need them.
If anyone has any feedback on their setup with the bosch lll's please share the info because it helps us also. Thanks Reid we will put the info in our records.

 

There should be no discussion here because of the potential fire threat if something goes wrong. Use the extra O-ring, be safe and be done with it. If someone wants to run the risk so be it. You have been warned of the possible problems.

 

I don't know why anyone even brought up accel or edelbrock bases, the OP asked about the TPIS Big Mouth.

@OP, as I said before, I installed Bosch III's in my Big Mouth with a single o-ring with absolutely no issues.

 

Well these are my set of Bosch III injectors. So I guess I can't use these since they have the adapters on them?

 

yes you can, when did you purchase them?? If you have any problems
please give us a call.

 

Install one next to one of your old injectors and make sure they sit at the same height. Also make sure the the o'ring is sealing in the bore of the TPIS manifold. In my case with the Edelbrock, the metal shoulder on their adapter was to big and hit the injector bore and didn't allow the o-ring to seal. Just something to check out.

 

another idea is once your stock injectors are removed, just put one along side the bosch lll and measure them oring to oring,,,,,, not the overall length of the injector. If there is a difference it will be approx 1/8 to 1/4in

 

I purchased them about a year ago, but Im still waiting for my new motor to be finished to install them. So as long as the length from o-ring to
o-ring is the same, I can use them?

 

absolutely

 

These injectors are the same length o ring to o ring as my stock injectors. However they still leak. I guess I need the style without the adapter? Grapheatea, do you have a picture of what your injectors looked like? Thanks.

 

Why can't you pull the adapter off, and then use the two O rings on the injectors?

 

If you were able to do that, you would definitely experience a vacuum leak. Once we apply the adapters we need to make sure that they are not loose, so basically they are on for good. This is why we have added a note to every advertisement that we have, to contact us if you have an aftermarket intake to assure that we send the appropriate set up.

 

I see.