« previous next »
Pages: [1]   Go Down

Author Topic: VG 20hp Couple Q's  (Read 4294 times)

0 Members and 1 Guest are viewing this topic.

Offline Tom Fox

  • Global Moderator
  • Mow-Forum Junkie
  • *****
  • Posts: 2157
  • Karma: 36
  • Gender: Male
    • View Profile
VG 20hp Couple Q's
« on: May 23, 2007, 03:07:22 pm »
Got a few Vanny questions. This pertains to a 20 hp VG V-TWIN.

I tore down the engine last night and was happy to find a nice and clean interior with no signs of overheating or sludge or anything....everything looks new. Prior to teardown I had less than 4% leakdown in each cylinder. Cross hatch is visable and no ring ridge at all.

Holy cow that flywheel weighs a ton!!! An ARC wheel will be ordered this week (Starter as well).

Question on coil packs.....are better once avail or do the stock ones perform even at higher than stock governed rpms?

SPARK PLUGS: I will be running the smaller chamber 16hp heads with the thin aluminum head gasket. What would be a ballpark plug# to start with?

Heads will be cleaned ported, new EC valve springs.....
A new CAM will also be installed

Would I be stupid to run this engine with the stock connecting rods and pistons???
I know longer ARC rods with cut pistons is the ticket but my wallet differs!!

What kind of RPM can the stock c-rods take?

Thanks!
Logged
Tom Fox       
Brookfield, CT

Offline Roger S

  • Turf Warrior
  • **
  • Posts: 189
  • Karma: 1
  • Gender: Male
    • View Profile
Re: VG 20hp Couple Q's
« Reply #1 on: May 23, 2007, 04:17:55 pm »
I know, where do you stop spending $

I think the stock pistons are solid; the rods.. well you'll be thinking about them when the throttle's wide open and the aftermarket cam wants to rev. I think the stock ignition is ok. Oh heck it's only another $300 for rods/rings/gaskets  :roll:

Remember if you do the long rod to add an extra washer on the spark plugs for clearance. Thanks to George for graduating the School of Hard Knocks for us.

Now the experts can answer your questions.

Logged

Offline money89tractors

  • Turf Warrior
  • **
  • Posts: 648
  • Karma: 14
  • Gender: Male
  • Case 110
    • View Profile
Re: VG 20hp Couple Q's
« Reply #2 on: May 23, 2007, 04:28:15 pm »
I remember George H saying that the stock coils do perfectly fine on his engiens.

-Phil
Logged
..."I used that motto to keep going, keep pushing, keep digging to
find a way around, or through to find a hole, some kind of break that
would allow some space. Once something broke thru, I could be there to
take advantage. Then I would finish 7th instead of 10th." - Dubba G

Offline mowcephus

  • Turf Warrior
  • **
  • Posts: 320
  • Karma: 2
  • Gender: Male
    • View Profile
Re: VG 20hp Couple Q's
« Reply #3 on: May 23, 2007, 06:54:04 pm »
The ARC rods are good insurance.  I wouldn't spend the money you're gonna spend if I could spend a few extra dollars and put the 2 ARC rods in there.  I'd get the rods before I got the flywheel!
Logged
Chris

Offline Tom Fox

  • Global Moderator
  • Mow-Forum Junkie
  • *****
  • Posts: 2157
  • Karma: 36
  • Gender: Male
    • View Profile
Re: VG 20hp Couple Q's
« Reply #4 on: May 24, 2007, 07:33:04 am »
After sleeping on it....I will order the ARC RODS, a new CAM, CUT PISTONS,......basicly all internals then hopefulley get the FLYWHEEL very soon!

I may just go nuts and order all that I need and be done with it!  It will only set me back  about....$1000






 :doh:





I guess speed costs money!
(money I really don't have either!)

Logged
Tom Fox       
Brookfield, CT

Offline George Herrin

  • aka SUPERMAN
  • Superman
  • Highly Mowtivated
  • *
  • Posts: 17732
  • Karma: 102
  • Gender: Male
  • I am going to Race Every Race like its my last one
    • View Profile
    • BTMRA Home/Forum An Independant Club.
Re: VG 20hp Couple Q's
« Reply #5 on: May 24, 2007, 11:43:28 am »
Well just to see what everyone had to say now I will jump in. All good advice by the way. NOW.. Stock coils are great. Stock rods 5500 and thats all I would trust them. If you are gonna spend the money on all the rest and not the rods, don't bother just send it to me and I can find a good way to spend it with out wasting it. Nothing meant bad by that other than do it right the first time and you will be very thankful the first time you slip a tire in mud or break a chain or forwhatever reason she hits the top rpms 6500 to 8000 by accident free reving and it stays together to do it again. With stock rods you will by a motor. Blocks are 250.00 plus whatever else you pop. GEt the extended rods and shave the stock pistons very dependable setup even turned the same setup 11500 twice (accident) with no ill effects. E.C. stocks everything you need fropm flywheel to rods to gaskets, to cams. We can fix you up.
Logged
George Herrin #6
Indian Power.. You gotta Go big to beat em or Go HOME
8 time ARMA National Champion
4 time USLMRA National Champion
Retired from BP
www.herrinmowersports.yolasite.com
www.allamericanmowerchampionships.yolasite.com
My other racer is a 1/5th scale Dirt Late Model!!!!

Offline fordman21

  • "The Bandit"
  • Global Moderator
  • Mow-Forum Junkie
  • *****
  • Posts: 1168
  • Karma: 5
  • Gender: Male
    • View Profile
Re: VG 20hp Couple Q's
« Reply #6 on: May 25, 2007, 01:05:09 pm »
As far as spark plugs go I like to use the NGK's because you can read them easily, you can tell by the amount of plating thats burnt off to get the cylinder temp reading by a few degrees without having expensive monitors, after all it is the plug reading that matters more than anything. I use the FR5's.
George has some good advice for you, and E.C. is very reasonable with their prices.   Ryan
Logged
Ryan Kerr  519-332-9532
2007 Troy Bilt Grand National Super Modified Champion.
2008 WOO Outlaw/FXT class Champion.
2008 All American Lawnmower Championsip Outlaw twins champion.
2010 WOO Outlaw/FXT class Champion.
2010 AAMC Twin Outlaw class Champion
2012 USLMRA FX/T National Champion
2012 SRAAUSO FXT Champion<br /

Offline Tom Fox

  • Global Moderator
  • Mow-Forum Junkie
  • *****
  • Posts: 2157
  • Karma: 36
  • Gender: Male
    • View Profile
Re: VG 20hp Couple Q's
« Reply #7 on: May 26, 2007, 07:04:53 am »
Thanks for the input.

George....When will be back in the "OFFICE" so can I call you for a parts order?

Will be ordering the following:

VALVE SPRINGS & RETAINERS
CAM
RODS (LONGER)
CUT PISTONS
RINGS
AIR FILTER ADAPTER AND FILTER

I will also need to talk to you about some CARB WORK as well.

If you could let me know a good time of the day to call we can go from there!

Thanks!
Logged
Tom Fox       
Brookfield, CT

Offline George Herrin

  • aka SUPERMAN
  • Superman
  • Highly Mowtivated
  • *
  • Posts: 17732
  • Karma: 102
  • Gender: Male
  • I am going to Race Every Race like its my last one
    • View Profile
    • BTMRA Home/Forum An Independant Club.
Re: VG 20hp Couple Q's
« Reply #8 on: May 26, 2007, 08:13:27 am »
Be back in Tuesday... Anytime I am there from 8 to 5 central. I even take calls on lunch.... Only time I don't is if I am COVERED UP. And as of quitting time Thursaday I was working on carbs for shelf stock. Number is 615-446-6807
Logged
George Herrin #6
Indian Power.. You gotta Go big to beat em or Go HOME
8 time ARMA National Champion
4 time USLMRA National Champion
Retired from BP
www.herrinmowersports.yolasite.com
www.allamericanmowerchampionships.yolasite.com
My other racer is a 1/5th scale Dirt Late Model!!!!

Offline Tom Fox

  • Global Moderator
  • Mow-Forum Junkie
  • *****
  • Posts: 2157
  • Karma: 36
  • Gender: Male
    • View Profile
Re: VG 20hp Couple Q's
« Reply #9 on: May 26, 2007, 08:15:34 am »
Thank you Sir...we'll be talking next week!
Logged
Tom Fox       
Brookfield, CT
Pages: [1]   Go Up
« previous next »