Wrong injectors?

Tiny
CHARTWIG1980
  • MEMBER
  • 7 POSTS
BILLSBLUE68
Thanks for getting back to me on this issue. I have also worked with DW to swap to the 18U-01-0042-8 injectors. I just sent back the 35U-01-0044-8 on RMA yesterday. I worked with Summit Racing quite a bit. They sent me photos today showing that they were able to cram one 35U into their intake. I was told it took a lot of effort, but they got one to fit. "Now try it with all 4 injectors in the fuel rail" was my response. If it took all your effort to force one down, shouldn't that tell you something Summit Racing?
I'm excited to get these 18U injectors so I can continue on with the LM7 build. One last question I have for you. Did you have to get any spacers to fit the 18U injectors or did they work with the intake and fuel rail without additional modifications?
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Tuesday, January 13th, 2026 AT 11:13 AM
Tiny
RYAN L
  • ADMIN
  • 273 POSTS
I did not use anything additional whether spacers or otherwise to get everything to fit and work. It did not even take a lot of effort to get the injectors in the intake in the video. Everything went together super normal. I am not sure why everyone else is having this difficulty. Sorry you had to deal with this but I am glad it is resolved. Thanks for using 2CarPros!
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Thursday, January 15th, 2026 AT 11:05 AM
Tiny
BILLSBLUE68
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  • 10 POSTS
I did not need any additional parts or pieces either. Pretty sure I installed all the injectors in the manifold and then lined them up and installed the rail.
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Thursday, January 15th, 2026 AT 11:13 AM

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