Thread pitch on PMO top cover bolts

[wprater]

I can't seem to get an accurate measurement on those bolts for the top cover of the PMO carbs. I think they're M5x0.75, but can anyone confirm?

[JJ 911SC]

They are really hard to find. Someone had to re-tap some wing nut. IIRC they are not metric.

Found it, 12-24 threads as listed below...

Originally Posted by Litle brother

Hi Trog.
Where din You buy the "Racing-Flat-Lids" and what was Your experience with those instead of the rain shields ?
Regards
Eskild.

"I'm using the PMO K&N filters that compliment their ITB's. The exception being that rather that using the rain-shields that were included, I opted to purchase their "Racing-Flat-Lids". The only issue with fitment is sourcing wing-nuts that fit the 12-24 threads on the mounting studs . Looked everywhere, but nobody around here seems to carry them in that size. In the end, I purchased stainless wing-nuts with a 8-32 thread, drilled them out, and re-tapped them to 12-24. Broke 3-taps...damn! "

[wprater]

thank you! I'll track these down!

[Gordo2]

I'm reasonably certaint they are metric - I have stainless knurled knobs holding my covers on - will see if I can find the receipt to confirm size.

Gordo

[JJ 911SC]

Originally Posted by Gordo2

I'm reasonably certaint they are metric...

Well you force to go to the garage

Instruction from my PMO kit:

Top of the stud: 12 x 24

Button of the stud: 10 x 32

[Gordo2]

Originally Posted by JJ 911SC

Well you force to go to the garage

Thanks JJ, saved me from sifting through piles of receipts - my bin organization method: get receipt, toss in big Tupperware bin...

I like to drive it like I stole it - sifting through receipts can be a harsh reminder that I didn't

Gordo

[KTL]

The thread size for the top cover (the cast aluminum piece that covers up the internal components like main venturis/chokes, floats, fuel reservoirs, etc.) is M5 x 0.80

[wprater]

Originally Posted by KTL

The thread size for the top cover (the cast aluminum piece that covers up the internal components like main venturis/chokes, floats, fuel reservoirs, etc.) is M5 x 0.80

so we're saying that we have two different sizes: M5 x 0.80 for the cast aluminum covering up the components and 12/24 for the rain trap on top of the cover?

[KTL]

Yep two different sizes