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Replacement Raptor petcock outlet size (Read 79 times)

eddytor

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Replacement Raptor petcock outlet size
05/17/20 at 08:13:18

I have a Savage LS-650 year: 2006

I bought a replacement petcock that doesn't use the vacuum line. It fits the tank but the outlet does not match the carbs inlet. The petcock fits the tank.

I got the Yamaha raptor 660 YFM660R model as described on the forum in another post.

Carb - approx 9mm
Petcock - approx 6.5 mm

My question is if I made this setup work would the flow rate of gas be insufficient?

I noticed on the web that the size of the outlet for the petcocks are not specified.

Thanks in advance for your thoughts,
Ed

Followup: I have read all the response posts. The consensus seems to be that I should get the larger correct size which I will do. Thank you all for your responses.

« Last Edit: 05/20/20 at 10:23:01 by eddytor »

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eddytor YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 2	Re: Replacement Raptor petcock outlet size Reply #1 - 05/17/20 at 08:14:07 The pics for the inlet and outlet sizes are at: http://www.tornick.com/categories/suzuki-savage-LS650/
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Replacement Raptor petcock outlet size Reply #2 - 05/17/20 at 08:45:34 If YOu didnt buy an Official Yamaha part, you didnt get the one that works.. The cheap knockoffs have smaller diameter outlets, and they dont flow Wurfashit..
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Hiko

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Re: Replacement Raptor petcock outlet size
Reply #3 - 05/17/20 at 15:59:41

I have had a non raptor petcock on my bike for about 2 years now
Today I decided to examine the thing
It has an outlet inside diameter of 4mm the carb has an inside diameter of 5 mm
The tank is half full and I timed one litre out of the hose 1min 40 secs
My bike on open road cruising burns 4litres per hour
The petcock on test will pass 36litres per hour
I am happy with it so far

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28782 L.A. California Gender:	Re: Replacement Raptor petcock outlet size Reply #4 - 05/17/20 at 16:56:06 In my experience, it'll be fine riding around town. On the superslab, you'll start running lean on the top end. And then you'll go up a hill and it'll cough...
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Hiko Senior Member Offline SuzukiSavage.com Rocks! Posts: 250 Tauranga New Zealand Gender:	Re: Replacement Raptor petcock outlet size Reply #5 - 05/18/20 at 00:20:43 Yes well I guess average flow rates dont tell us much about wide open throttle flow rates I am a conservative rider so maybe I just havent noticed any faltering
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zipidachimp Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1393 surrey, b.c. Gender:	Re: Replacement Raptor petcock outlet size Reply #6 - 05/18/20 at 14:20:03 5/16" tubing works just fine ! Cheers!
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Dave

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Re: Replacement Raptor petcock outlet size
Reply #7 - 05/18/20 at 16:15:56

One of the other problems, is the potential air lock that can happen as the hole size gets smaller. When doing a flow test the unrestricted flow can push the air out - but when the tubing is installed and the bike is only flowing a small amount.......the air can get trapped and block the flow of fuel. This really becomes a problem when you install a small plastic inline filter, as the plastic nipple has a thick wall and the hole is small and restricts flow of fuel....especially when a bubble gets trapped!

Someday I will be old......But not today!

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