2 STROKE WORLD .net

The 2-Stroke Garage => Turning Wrenches => Topic started by: Czakky on November 11, 2019, 07:47:27 PM

Title: Petcock upgrade
Post by: Czakky on November 11, 2019, 07:47:27 PM
Looking to run a higher flow petcock on my R5 tank. I vaguely remember on the old forum guys putting Pingel valves but, I'm pretty sure there is no direct fit.

What's the cheat code?

I'm open to any recommendations.
Title: Re: Petcock upgrade
Post by: quocle603 on November 11, 2019, 09:11:19 PM
up up down down left right left right b a start.

Title: Re: Petcock upgrade
Post by: Czakky on November 11, 2019, 09:29:41 PM
Contra!
Title: Re: Petcock upgrade
Post by: quocle603 on November 11, 2019, 09:54:37 PM
Pingles are really nice. Is your bike starving of fuel? I hear of people running with the stock petcocks without any issues with their modded bikes.
Title: Re: Petcock upgrade
Post by: Czakky on November 12, 2019, 05:21:33 AM
Trying to cover all my bases. I'm not sure where the stock petcock tops out.
Title: Re: Petcock upgrade
Post by: rodneya on November 12, 2019, 11:34:01 AM
No reserve on the pingle is the biggest drawback
Title: Re: Petcock upgrade
Post by: m in sc on November 12, 2019, 11:48:15 AM
DEPENDS ON CARB SIZE, FLOAT VALVE SIZE VS MAIN JET + PILOT JET AT WOT.
Title: Re: Petcock upgrade
Post by: Organicjedi on November 12, 2019, 12:12:06 PM
Chuck does a modified raptor petcock with reserve. Works good.
Title: Re: Petcock upgrade
Post by: SUPERTUNE on November 12, 2019, 02:11:57 PM
Quote from: Organicjedi on November 12, 2019, 12:12:06 PM
Chuck does a modified raptor petcock with reserve. Works good.
Only for 400's.
350's are different narrower bolt pattern...
C
Title: Re: Petcock upgrade
Post by: Organicjedi on November 12, 2019, 02:43:31 PM
Quote from: SUPERTUNE on November 12, 2019, 02:11:57 PM
Quote from: Organicjedi on November 12, 2019, 12:12:06 PM
Chuck does a modified raptor petcock with reserve. Works good.
Only for 400's.
350's are different narrower bolt pattern...
C

Good to know!
Title: Re: Petcock upgrade
Post by: Tuck on November 12, 2019, 02:54:02 PM
Quote from: rodneya on November 12, 2019, 11:34:01 AM
No reserve on the pingle is the biggest drawback

My Pingle has a reserve. :twocents:
Title: Re: Petcock upgrade
Post by: m in sc on November 12, 2019, 03:06:23 PM
yup. you can get em either way.

:twocents:
Title: Re: Petcock upgrade
Post by: Czakky on November 12, 2019, 05:25:03 PM
Anybody mount one to a 350 tank?
Title: Re: Petcock upgrade
Post by: Czakky on January 19, 2020, 04:54:09 PM
In doing some research there is a blank adapter plate that Pingel sells, unfortunately it looks like it might be a tight fit.

3/8" npt=9.5mm the r5 mounting holes are 20mm center to center, mounting screws are 4 or 5mm (?). It leaves me with less than 2mm between spigot hole and mounting screws. Not sure I'm too confident in that.

This is on TM32s with 280 mains Stage 2 Supertune treatment
Title: Re: Petcock upgrade
Post by: m in sc on January 20, 2020, 11:44:32 AM
thats plenty for support.  :twocents: 1mm = roughly .040", so lets say at 'less' that 2mm, thats roughly .070" per side. thats more than enough to support a petcock. 3/8" is a bit much though, just get a 1/4" or 5/16 strip of aluminum, drill 2 holes to mount, tap the middle for 1/4" npt, and use a 1/4" npt petcock.   regular gasket material to seal against bottom of tank, case sealant, and stat-o-seal washers under allen bolts to seal up the threaded holes.

:twocents:
Title: Re: Petcock upgrade
Post by: Czakky on January 20, 2020, 12:33:18 PM
The only dual output valve that Pingel offers is 3/8". Would there be much advantage over stock on a single output with a splitter?
Title: Re: Petcock upgrade
Post by: m in sc on January 20, 2020, 01:20:22 PM
single with a splitter is fine
Title: Re: Petcock upgrade
Post by: Dvsrd on January 22, 2020, 08:40:51 AM
Why not use 1/8" NPT or BSP thread?  Or do Pingel only supply 1/4"?
Title: Re: Petcock upgrade
Post by: m in sc on January 22, 2020, 09:55:32 AM
easier to find a 1/4" NPT with reserve.  bsp, not common here. ( I actually work in the valve industry).
Title: Re: Petcock upgrade
Post by: Dvsrd on January 22, 2020, 10:41:15 AM
Quote from: m in sc on January 22, 2020, 09:55:32 AM
easier to find a 1/4" NPT with reserve.  bsp, not common here. ( I actually work in the valve industry).
I know NPT is the US standard, from endless issues with people mixing BSP and NPT on the offshore equipment I work with. Most all major hydraulic valve, pump and motor manufacturers use parallel thread BSP in their ports, due to the "wedging" action of the tapered NPT, which can cause minor deformation in housings.....
Title: Re: Petcock upgrade
Post by: m in sc on January 22, 2020, 10:57:38 AM
or sae ;) (at least here). I'm familiar with both, we get requests for BSPP and G thread on occasion, its just hard to source, which really sucks as we have missed out on a few good orders. as an fyi though, 1/4 bsp & npt 1/4 will interchange within 1 thread difference in engagement, that's the ONLY one you can really 'fudge' and get away with , ive tested it up to 5000 psi here . (air over water setup)  :twocents:

boy did this drift off topic  :dawg:
Title: Re: Petcock upgrade
Post by: Czakky on January 22, 2020, 04:32:22 PM
Well I learned something.
Title: Re: Petcock upgrade
Post by: Czakky on January 22, 2020, 04:41:11 PM
BTW my math was way off on the 3/8npt petcock. Even the 1/4"npt only gets at best 2mm of gap between screw holes....