Search found 16 matches
- Thu Aug 12, 2010 7:41 pm
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: 75 440 Sno Twister F/A grass set-up
- Replies: 5
- Views: 8783
Re: 75 440 Sno Twister F/A grass set-up
Sounds good. Not too many free-airs of any brand will run with a dialed in Kohler in Stock class drag racing.
- Thu May 13, 2010 7:56 am
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: 75 440 Sno Twister F/A grass set-up
- Replies: 5
- Views: 8783
Re: 75 440 Sno Twister F/A grass set-up
Thanks for the info. Those numbers look good. Just curios - what do you use for clutches? I like the hex. Other guys have better luck with the Comet. I know Tom Priebe over in Wisconsin runs a Comet on the '75 Merc 440 that they run, and that sled is fast,...... probably faster then my Rupp. Alot d...
- Sat May 08, 2010 9:52 am
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: SuperMod porting
- Replies: 10
- Views: 13605
Re: SuperMod porting
Just a quick up date to an old post of mine regarding my 340 f/a engine with the Tipster sheet specs. I am currently racing that engine in my mod stock Rupp F/A chassis. The sled runs good, in spite of the fact that I am still running the complete stock Rupp exhaust system along with 38mm carbs. The...
- Sat May 08, 2010 9:31 am
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: 75 440 Sno Twister F/A grass set-up
- Replies: 5
- Views: 8783
Re: 75 440 Sno Twister F/A grass set-up
My '75 Rupp F/A 340 stocker has run a best ET of 7.26 @ 64 mph at the Princeton grass drags here in Minnesota. My 440 Rupp F/A stocker has run a best of ET 7.11 @ 69mph. So yes,.....the ET and top speed you are looking for from your Merc are achievable.
- Thu Feb 16, 2006 12:15 pm
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: Need clutching info for '76 250 Sno Twister
- Replies: 5
- Views: 2721
- Sat Apr 30, 2005 1:36 am
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: anybody out there
- Replies: 2
- Views: 1504
Kerry, I raced against you several times this winter and have alot of respect for you and your sled. Do not abandon your current set-up. You are doing alot of things right or you wouldnt be running so strong. I believe all you need is some fine tuning. I know I must get faster by next winter if I ex...
- Fri Feb 18, 2005 1:22 am
- Forum: Mercury Sled Information
- Topic: Top speed of a 440f/a sno twister?
- Replies: 7
- Views: 4933
- Sun Jan 09, 2005 10:55 pm
- Forum: Mercury Snowmobiles For Sale
- Topic: ' 74 Twister Open Mod race chassis
- Replies: 1
- Views: 1402
For Sale- ' 74 Merc Twister open mod race chassis. This sled would be good for speed runs or drags. This is a true vintage mod sled, probablely built back in the mid '80s. Sled features Wahl gas tank and skis, ' 75 Z Cat suspension/w custom cleated track made from Rupp Magnum bands. Chassis only, no...
- Fri Dec 24, 2004 11:46 am
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: 75 ST compression
- Replies: 1
- Views: 1356
- Tue Nov 16, 2004 10:11 pm
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: '76 340 T/T Idle Speed
- Replies: 2
- Views: 1546
- Mon Mar 15, 2004 3:45 pm
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: SuperMod porting
- Replies: 10
- Views: 13605
Scott, thanks for the reply. I will give a report on how the performance changes, whether good or bad, with the new porting after testing the sled on the electronic timer next winter. I am not that concerned if some low and mid range performance is lost, as the sled will only be drag raced. The only...
- Sat Mar 13, 2004 5:21 pm
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: SuperMod porting
- Replies: 10
- Views: 13605
I already asked this question some time ago and no one replied, so I thought I would try again. Has anyone out there ever tried the SuperMod porting specs for the K3402rs engine as found in the TwisterTipster bulletin? How much of a performance gain was found? I had my cylinders cut to these specs l...
- Sat Mar 13, 2004 1:03 pm
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: ' 76 440 Sno-Twister gearing
- Replies: 2
- Views: 1773
- Tue Mar 09, 2004 11:02 pm
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: ' 76 440 Sno-Twister gearing
- Replies: 2
- Views: 1773
- Wed Nov 26, 2003 8:38 pm
- Forum: Sno-Twister/Trail Twister Technical Help
- Topic: K340 2rs porting/mods
- Replies: 1
- Views: 1693