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Messages - slideways

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1
Mower Engines & Parts / Hot Vanguard Cam
« on: April 18, 2021, 09:25:16 pm »
I have a cam out of one of our 35ci sealed engines from rebuild time. I measure base circle at ~.870 and lift at ~1.170. These make power in our engines at about 5500rpm and torque peak around 4200. We run them 6400 peak all year. I've sold them in years past to very happy golf buggy guys.

Email me for a quicker response coolredjeep@aol.com

$120 + cheapest ground shipping.

2
Briggs OHV & Vanguard / Grass Cutter Model 31 sounds choked down
« on: August 18, 2020, 08:23:45 pm »
I have a really low hours 18.5hp Model 31 on a mower that had some random smoke issue that i was told was probably a head gasket. I replaced it and put a chinese carb on since the solenoid leaked. Beforehand the motor ran fine and sounded strong and it also ran ok right after the head gasket install once i got the carb tuned ok. The issue i have now is that under a load (like any time the PTO) is on you can audibly hear it "snorkling" through the intake and its noticeably short of 3600rpm. I tried with/without air cleaner, rechecked the valves, torqed the head, even removed the muffler since it was like there was a restriction and it will run full throttle unloaded but just lacks the loaded rpm. It idles ok so i dont suspect a head/vacuum leak. It will actually idle so smooth that it will chug at like 400rpm like a hit and miss engine if i get it that low.

3
Coffee Shop / Re: Briggs Model 31 random smoke
« on: September 26, 2019, 01:50:06 pm »
Does it warp the head or should I just buy a new gasket and hope for the best?

4
Coffee Shop / Briggs Model 31 random smoke
« on: September 26, 2019, 01:07:39 pm »
I just inherited a grass cutter with an 18.5 ELS Model 31 on it. I’m plenty familiar with Vanguards but this is strange to me with this thing. The oil level looks correct and it runs with decent power. Sort of skippy at full rpm but with the blades running you don’t notice any stumble. I had to clean the carb out since it sat unused for 5yrs. After 20 minutes or so it will randomly bog down and just billow gray smoke for 5 seconds and then clear right out and keep going. Motor is more “clackety” than a Vtwin but I guess that’s more normal than the smoother Vtwin.

5
Mower Engines & Parts / Re: Vanguard Cams and Rods
« on: May 12, 2019, 11:50:54 am »
Havent checked in lately. Not sure what other info you'd need on the cams besides what i put there. We arent allowed to work on our engines so i dont know how to measure anything specs wise besides the lift. That cheetah has the cam card pictured and is brand new never in an engine.

6
Mower Engines & Parts / Re: Vanguard Cams and Rods
« on: April 03, 2019, 09:20:23 pm »
Rods are gone, just the cams left!!

7
Mower Engines & Parts / Vanguard Cams and Rods
« on: March 12, 2019, 08:36:35 pm »
I have 2 billet non insert Vanny rods that have about 10 races on them. We have a mandatory engine builder and arent allowed in the engines. We request new rods every time they are out for rebuild. $100 for the pair.

Also have a stock cam +.100 lift which makes torque at around 4000rpm and peak hp at 5800 with stock heads/valvetrain. We turn them 6600rpm typically. $125

A brand new Cheetah cam in the bag with card never run. Paid $250 this summer. Will take $200.

I have paypal and will estimate or combine shipping. Its tough to get to a UPS store working 8-5 so bare with me please on shipping.






8
Briggs OHV & Vanguard / Re: Need a part number
« on: July 11, 2017, 09:54:38 am »
The ring gear used to have a part number though. Any idea what that was? In a parts breakdown it just says on it no longer available. I'm trying to replace the ring gear if possible without getting a whole flywheel.

9
Briggs OHV & Vanguard / Need a part number
« on: July 09, 2017, 09:17:49 pm »
On any Vanny V twin there used to be flywheels with the aluminum ring gear riveted to them. I know they are discontinued but does anyone know what the old number used to be? Or if there is an aftermarket replacement? I have a model 35 but they are all the same ring gear whether it had the fins cast in or not.

Thanks for the help

10
Briggs OHV & Vanguard / Vanny block journal size
« on: November 21, 2016, 03:45:59 pm »
I have 2 blocks here and i am not sure what the size should be to determine if they are the large or small journal on the flywheel side. 35 blocks so it could be either. I only have the block not the crank to help ID them.

Thanks for the measurement

11
Briggs OHV & Vanguard / Re: High RPM durability-what next?
« on: June 05, 2016, 11:16:49 am »
In a class that has been around since 2000 running stock flywheels at that rpm with never a single failure. It wasnt until 2012 then the ARC was allowed for competition. I agree that its not the smartest idea and the ARC is a no brainer to use in 90% of cases. I run the ARC on all 4 of our engines but in certain cases the steel one has its advantages. To answer the torque question its typically a 2-3ft lb gain simply by bolting the ARC on vs the 16lb Steel unit.

12
Briggs OHV & Vanguard / Re: High RPM durability-what next?
« on: June 02, 2016, 08:35:15 pm »
We run stock flywheels in our class upwards of 6500rpm with no issue.. that's with stock charging too. But i would recommend going billet for tuning and for the torque increase. I'd say your limiting factor is the stock rods and pistons... or at least for sure the stock rods.. I dont think many are turning too far over 5500 with stock rods. Once you go billet you can turn it 7000 without much worry.

13
Alot of guys use just the EC outers for mild builds like this. I use stock Briggs springs. I cant recall the part number though. But they are the only ones they offer now as they've superceded to just one valve spring for most of the vanguards old or new.

14
You dont have anything to worry about.. we run the stock flywheel and stock valvetrain to 6500rpm with no issues. Just get better springs and make sure you have the updated rocker arms not the old style ones. There's a thread deep in the archives with pics of both.

15
Briggs OHV & Vanguard / Starter Bolt Length needed
« on: July 25, 2015, 07:46:02 pm »
All of my motors are buried in chassis and i need the length of the starter bolts on a Vtwin Vanny with the Denso starter. I think they are M8x1.25 by 100mm?

Thanks

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