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Search found 1007 matches

by gmrocket
Sun Jan 19, 2020 11:32 pm
Forum: Electric & Hybrid Vehicle ** NEW **
Topic: 5 minute charging
Replies: 9
Views: 1226

Re: 5 minute charging

The limitation becomes the distribution network. 100 kWh (let's say) in 5 minutes requires 1200 kW power delivery from the charger = 1.2 MW. That might be possible if you are plugged directly into a nuclear plant, but otherwise, not likely! As charging stations and at-home chargers become more prev...
by gmrocket
Sun Jan 19, 2020 6:08 pm
Forum: Engine Tech
Topic: Sealers and thread lockers for final assembly
Replies: 34
Views: 694

Re: Sealers and thread lockers for final assembly

Why would I change something that has worked flawlessly for 20+ years and can be bought at any local parts store? I am not saying that other things wont work, just posting my personal experience that has always worked. I got the practice from others who had been doing it much longer that me on a pr...
by gmrocket
Sun Jan 19, 2020 5:37 pm
Forum: Engine Tech
Topic: Sealers and thread lockers for final assembly
Replies: 34
Views: 694

Re: Sealers and thread lockers for final assembly

Probably Copper RTV or Permatex brush, Something sticky enough that it doesn't come loose but forgiving enough that it can be removed without galling. May not be needed but I don't like the possibility of a rocker stud working loose with anti seize and so far I have not had an issue even with solid...
by gmrocket
Sun Jan 19, 2020 4:20 pm
Forum: Engine Tech
Topic: Sealers and thread lockers for final assembly
Replies: 34
Views: 694

Re: Sealers and thread lockers for final assembly

Sounds like it's time to build you a rocket stove for your shop. I only use red lock tight for fly wheel bolts, I use a locking tab plate for cam bolts but I guess lock tight would work as well I use Ultra Copper RTV for rocker studs entering the port and Permatex Brush Gasket sealer for head studs...
by gmrocket
Sun Jan 19, 2020 3:51 pm
Forum: Engine Tech
Topic: Sealers and thread lockers for final assembly
Replies: 34
Views: 694

Re: Sealers and thread lockers for final assembly

Sounds like it's time to build you a rocket stove for your shop. I only use red lock tight for fly wheel bolts, I use a locking tab plate for cam bolts but I guess lock tight would work as well I use Ultra Copper RTV for rocker studs entering the port and Permatex Brush Gasket sealer for head studs...
by gmrocket
Sun Jan 19, 2020 9:02 am
Forum: Engine Tech
Topic: 100 Octane Pump Gas by 2020?
Replies: 138
Views: 11645

Re: 100 Octane Pump Gas by 2020?

Truckedup wrote:
Sun Jan 19, 2020 8:38 am
I didn't know the Rotax engines were used in new bikes.....
BRP uses Rotax in all their trikes....
by gmrocket
Sun Jan 19, 2020 7:46 am
Forum: Engine Tech
Topic: 100 Octane Pump Gas by 2020?
Replies: 138
Views: 11645

Re: 100 Octane Pump Gas by 2020?

I'm far from an expert....Some bikes and cars have static compression ratios of 12-1 along with variable valve timing that supposedly run at full power on 91 R+M/2 pump gas....Maybe in a few years designs will aloow even higher cyliner pressures, N/A or supercharged on the same or lower octane ? Yu...
by gmrocket
Sun Jan 19, 2020 7:26 am
Forum: Engine Tech
Topic: Sealers and thread lockers for final assembly
Replies: 34
Views: 694

Re: Sealers and thread lockers for final assembly

you don't use sealer or locker on rocker arm studs. you lube them and tq to spec according to the thread size, lube used and into what material.. typically into aluminum is about 10lbs less than into iron for a 7/16th stud
by gmrocket
Sun Jan 19, 2020 4:54 am
Forum: Engine Tech
Topic: 100 Octane Pump Gas by 2020?
Replies: 138
Views: 11645

Re: 100 Octane Pump Gas by 2020?

I'm far from an expert....Some bikes and cars have static compression ratios of 12-1 along with variable valve timing that supposedly run at full power on 91 R+M/2 pump gas....Maybe in a few years designs will aloow even higher cyliner pressures, N/A or supercharged on the same or lower octane ? Yu...
by gmrocket
Sat Jan 18, 2020 10:05 pm
Forum: Engine Tech
Topic: Measuring for pushrods...part deux
Replies: 46
Views: 1027

Re: Measuring for pushrods...part deux

7.670” PR length with no preload gives a nice centered and fairly tight contact pattern on the valve tip, so I think a 7.700” PR will do the trick as I usually use 1/2 turn of preload. This is with the scorpions. It will either work or I’ll be putting guides in this thing in short order. In any cas...
by gmrocket
Sat Jan 18, 2020 6:43 am
Forum: Engine Tech
Topic: Plastagage versus bore gauge
Replies: 42
Views: 1676

Re: Plastagage versus bore gauge

I too have recently been playing with the conventional type bore gauges in measuring bearing clearances. With 2 different branded Japanese tools I get consistently similar results. With plastigauge I'm getting around 0.005mm tighter readings on a 2 inch journal. This is with a European platigauge e...
by gmrocket
Fri Jan 17, 2020 8:52 am
Forum: Engine Tech
Topic: Cloyes Hex A Just
Replies: 7
Views: 465

Re: Cloyes Hex A Just

The cam stays where it is, you move the crank either forward or back which moves the cam gear, to where you want it... then lock it down

Done it that way many times..
by gmrocket
Fri Jan 17, 2020 1:34 am
Forum: Engine Tech
Topic: Where is the 2019 EMC info?
Replies: 6
Views: 398

Re: Where is the 2019 EMC info?

Damn really would like to see more on that 289 Ford... Selfish reasons. :D Here's a thread on it: https://www.speed-talk.com/forum/viewtopic.php?f=1&t=58737 https://hosting.photobucket.com/images/aa150/Sleepercp/3/289%20best%20pull.jpg https://hosting.photobucket.com/images/aa150/Sleepercp/3/289%20...
by gmrocket
Fri Jan 17, 2020 12:22 am
Forum: Engine Tech
Topic: 100 Octane Pump Gas by 2020?
Replies: 138
Views: 11645

Re: 100 Octane Pump Gas by 2020?

Aren't we already just about there? 100 RON , 95 rated in the U.S. and Canada . We can easily get 94...so what if they call it premium, it's readily available. Anything above that would be beyond what they are talking about...unless that would be the minimum, which really isn't sensible because so m...
by gmrocket
Thu Jan 16, 2020 8:20 am
Forum: Engine Tech
Topic: Measuring for pushrods...part deux
Replies: 46
Views: 1027

Re: Measuring for pushrods...part deux

I need to find some lighter springs or pump up my lifters to confirm some numbers. I tried something different just now, which came up with a different number yet :roll: I found a washer that fit perfectly on top of the snap ring and had a slightly smaller ID than the 5/16” test pushrod. This effec...