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Old 08-10-2016, 05:06 PM
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Default Bolt size

Any one know the thread for the oil drain bolt on the predator motor .
I need an set screw head to get extra 1/4 of space to move motor.



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Old 08-10-2016, 05:30 PM
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It's metric. Therefore it cannot be explained.

EDIT: It's an M-something. Probably an M16. Which means you will having trouble getting one in California or New York.
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Old 08-10-2016, 05:37 PM
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Quote:
you will having trouble getting one in California or New York.
Are you serious?
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Old 08-10-2016, 06:12 PM
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Well since you have it in your hand, Take it to the hardware store with you, find a nut that threads onto it. Then buy the bolt you want that also threads onto the test nut.

It may be metric it may not. The crank bolt for holing on a clutch is American AKA Imperial.
So maybe they used am American drain plug, Just so a standard drain plug bolt can be used.

Either is Available in Communist Ca and Ny
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Old 08-10-2016, 06:27 PM
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Either is Available in Communist Ca and Ny
Indeed they are komrad!
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Old 08-10-2016, 06:33 PM
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Quote:
Originally Posted by Iron John View Post
It's metric. Therefore it cannot be explained.

EDIT: It's an M-something. Probably an M16. Which means you will having trouble getting one in California or New York.
well by the pic I can tell it's NOT M16!

more like M10

just measure it (with what measuring tool you have)
multiply by 25.4 if you'd measured in inches and round up to know.

(i.e. say it's ~3/8" -> 76.2/8 = 9.525.. likely M10)

My clones (non predator) have 10mm threads... I think the predator has too... but I can't tell for sure.

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Old 08-10-2016, 06:37 PM
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I measured mine (non-Hemi Predator) and it would seem to fit #20 thread or 20 tpi, SAE. Can anyone corroborate that?
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Old 08-10-2016, 06:48 PM
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Originally Posted by Hellion View Post
I measured mine (non-Hemi Predator) and it would seem to fit #20 thread or 20 tpi, SAE. Can anyone corroborate that?
I checked the RATO manual (the chnese company making the predator engine)
it's M10 1.25

1.25mm x 20 is 25mm,
an inch is 25.4mm; so yeah close, but no cigar

'sid

[EDIT]
odd another rato manual calls for M10x1.5 x15 (1.5 mm thread height, 15mm long)
that'd make ~17TPI only... *shrugs* chinese... measure it !!

OH btw: since it relies on the gasket washer to seal.. how'd you do that with a grub screw?
teflon tape?
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Old 08-10-2016, 08:02 PM
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It was close but not a perfect fit on my thread gauge. Thanks for the confirmation--it wouldn't be anything other than metric, realistically.
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Old 08-10-2016, 08:13 PM
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M10-1.25
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Old 08-10-2016, 08:39 PM
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Quote:
Originally Posted by Iron John View Post
It's metric. It's an M-something. Probably an M16. Which means you will having trouble getting one in California or New York.
Quote:
Originally Posted by Russ2251 View Post
Are you serious?
Quote:
Originally Posted by chancer View Post
So maybe they used am American drain plug, Just so a standard drain plug bolt can be used.

Either is Available in Communist Ca and Ny
Quote:
Originally Posted by Russ2251 View Post
Indeed they are komrad!
Holy cow, holy moly, holy toledo.

Follow along with me, everyone:

1 - It's a metric fastener.

2 - Metric fasteners are denoted by M-something.

3 - Maybe this one is an M16.

4 - (OK, if you have to explain a joke....M16s are Evil Black Guns.)

5 - Evil Black Guns are no-nos in California and NY.

See what I did there? It was humor that stepped outside the realm of go-karts.

Sheesh. I don't think one person got it.
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Old 08-10-2016, 08:44 PM
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Nope NOBODY Got it.
You know if you have to explain it, it aint funny!
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Old 08-11-2016, 06:57 AM
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Quote:
Originally Posted by itsid View Post

OH btw: since it relies on the gasket washer to seal.. how'd you do that with a grub screw?
teflon tape?
At an actual hardware store you will find washers with rubber, nylon or teflon adhered to one side, or you could just get a nylon washer.
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Old 08-11-2016, 09:06 AM
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Quote:
Originally Posted by ezcome-ezgo View Post
At an actual hardware store you will find washers with rubber, nylon or teflon adhered to one side, or you could just get a nylon washer.
WHAT?!

OP is removing the bolt (head!) to install a grub screw (no head!) of the same size in order to gain that 1/4" more clearance...

Now, what were you saying about sealing washers?

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Old 08-11-2016, 09:50 AM
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I can say the oil dipstick spout is M18 on Predators, I do exactly what you're wanting to do, I put in a set screw as to shave some of the spout off to fit the TAVs
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Old 08-11-2016, 09:58 AM
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Quote:
Originally Posted by supermanotorious View Post
I can say the oil dipstick spout is M18 on Predators, I do exactly what you're wanting to do, I put in a set screw as to shave some of the spout off to fit the TAVs
You still don't seem to grasping this...this is an oil drain plug...nothing to hold a washer...thread sealant is the ONLY solution.
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Old 08-11-2016, 10:29 AM
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I use thread sealer on the threads, there is no "head", it goes way down in to the case, not sure what you're not grasping ;-) that was my first contribution to this conversation so...... "still don't seem to be grasping...."?

I bring this up to say the drain hole is more than likely metric, and much smaller than a M20

that being said, the mounting bolt holes for the TAV plate, are 5/16" fine thread standard- go figure
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Old 08-11-2016, 10:41 AM
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Quote:
Originally Posted by Poboy kartman View Post
You still don't seem to grasping this...this is an oil drain plug...nothing to hold a washer...thread sealant is the ONLY solution.
No Doug.. you just seem to not remember (luckily I do )

and to make it short (Ryan's video):


see? a how-to and teflon tape

true, different location; still the same thing!

'sid

[EDIT]
oops too late.. Anyways linking your video doesn't hurt
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Old 08-11-2016, 11:25 AM
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My bad...I confused EzCome and Super...I thought it was another Ez post...

(Defending his washer advice) ....Doh! Po PAFR.
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Old 08-11-2016, 11:52 AM
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Oops my advice is no bueno. Teflon tape FTW.
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