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GROUP BUY: Lower Intake Manifold big bore.

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Rara said:
Harrry asked me to comment on why the LIM was designed with those detent pins . . .

The truth is, I have freaking idea . . . lol. The only thing I can figure is it might have had to do with assembly, but even that doesn't make much sense.
Click to expand...

Thank you Rara for taking the time to even look at this issues. Becuase i have no idea myself.

I assumed myself it was initially installed as a safety precaution in the early modular racing mustangs that ran a butterfly setup....but was kept in the design for safety measures for the contour??...:shrug:

When i reassembled my optmized lim's..i did not re install the pins,:shrug: If that helps any.
 
Thank you for the responses. It does look like something left over from a previous design. At this point, it only seems to complicate the design and make any future disassembly a real pain. Unless someone really wants them reinstalled, I don't plan to reinstall them either.

I will be working on the LIMs this weekend, and will have Matt post up pictures as soon as I get some good ones.

Mike
 
SHOpartsNW said:
Thank you for the responses. It does look like something left over from a previous design. At this point, it only seems to complicate the design and make any future disassembly a real pain. Unless someone really wants them reinstalled, I don't plan to reinstall them either.

I will be working on the LIMs this weekend, and will have Matt post up pictures as soon as I get some good ones.

Mike
Click to expand...

The most difficult part of the disassembly is the screws. The rods are easy :)
Mike if you need to, get my number from matt. That way i can any problems you run into.
 
Once I figured out a method for removing the screws, I got pretty good at removing them. The detent pins and pulling the rods became the trouble spot. On the super crudded up intakes, the varnish and carbon stuck the detent pins and made a locking mess so the rods would not pull (even after removing the detent pins).

All that is behind me now though. I am in the reassembly phase, and i have the parts all cleaned up so they will go together nicely.

Thanks for the help

Mike
 
The pictures show the bore difference.

I delayed making the plates because we saw some significant variation in the Ford castings while we were boring the housings. I wanted to make sure I could measure the final bore and design the plate accordingly. Trivia point. Although the factory LIMs look like they are done on a milling machine, we found the bores are not necessarily round or centered. They may have been done on a hone? In any case, we found that some of the primary bores where we were not boring very far did not fully "clean up". This will not affect operation at all, but if you see some slight difference in the primary bore finish, we think it is just where Ford honed out farther to clean up the castings. The secondaries all cleaned up and look good.

Regarding the custom plates: I just got the call today from our plate manufacturer and the plates are done, so I should be able to complete a LIM (or maybe all of them) this weekend.

Mike
 
Before:
before_LIM_pic.jpg


After
after_LIM_pic.jpg
 
I tried to assemble the LIMs this weekend, but our plate maker made the plates about .5mm too large :nonono:. I will solve this latest issue this week and get you guys a final picture of a completed LIM.

Thanks

Mike
 
I just finished the first LIM. We will get pictures up shortly, but I am going back to assembling the rest of the batch. I don't know how many I will finish today, but we will start shipping them to you guys next week.

Again, thank you for your patience through the prototyping, technical difficulties and my back injury.

Mike
 
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