Search found 15 matches

by jrjanes
Tue Feb 14, 2012 12:05 pm
Forum: General Discussion
Topic: Engine Swap ideas?
Replies: 5
Views: 4530

Re: Engine Swap ideas?

Gotcha, forks are definitely on my list, the seals are blown and the tubes are pitted, so there's no saving them.
by jrjanes
Tue Feb 14, 2012 12:02 pm
Forum: Technical Discussion
Topic: Project 100mpg
Replies: 63
Views: 32814

Re: Project 100mpg

yeah reduced pressure on a fluid will allow it to evaporate easier and with less drag on the engine as a result of a vacuum will make it more efficient and generate more power so MPG's increase as well.
by jrjanes
Sun Feb 12, 2012 11:38 am
Forum: Technical Discussion
Topic: Project 100mpg
Replies: 63
Views: 32814

Re: Project 100mpg

But one thing about these engines is that they're much different than what you see on the road. We run a turbo with a required air restricter and ethanol fuel. The internals are stock though.
by jrjanes
Sun Feb 12, 2012 11:32 am
Forum: Technical Discussion
Topic: Project 100mpg
Replies: 63
Views: 32814

Re: Project 100mpg

We top out at 12.5, the percent power improvement is unknown but it is more for reducing C.G. height. All the rules for our engine is on the formula SAE website. you can google search it. The dry sump pan is 3/4 of an inch which is quite a bit thinner than the stock f4i pan. and we can also locate t...
by jrjanes
Sat Feb 11, 2012 7:59 pm
Forum: Technical Discussion
Topic: Project 100mpg
Replies: 63
Views: 32814

Re: Project 100mpg

Some formula SAE teams do this with their engines, what we do with ours is a dry sump on an F4i, the pumps induces a vacuum and pull the oil out but your right with the oil foaming, which necessitates the need for a swirl pot with baffling to aerate the oil. Thats kind of the basic idea behind it, I...
by jrjanes
Sat Feb 11, 2012 7:54 pm
Forum: General Discussion
Topic: Engine Swap ideas?
Replies: 5
Views: 4530

Re: Engine Swap ideas?

I see, if I did do it, it was most definitely for a uniqueness factor. If I did go that far. But I see what you're saying about the suspension. Do you have any suggestions about particular brands for aftermarket rear shocks and progressive springs?
by jrjanes
Thu Feb 09, 2012 10:45 pm
Forum: General Discussion
Topic: Engine Swap ideas?
Replies: 5
Views: 4530

Re: Engine Swap ideas?

Also, does anyone have an idea where I could find models/drawings of the cb650 chassis?
by jrjanes
Thu Feb 09, 2012 9:35 pm
Forum: General Discussion
Topic: Engine Swap ideas?
Replies: 5
Views: 4530

Engine Swap ideas?

I'm kinda toying around with doing an engine swap with my bike, I was kinda thinking of using the honda hornet since it's carbed and makes decent power. I think the mounting holes will be somewhat close so fabin some mounts wont be to hard. I was just wondering if anyone had any ideas?
by jrjanes
Thu Feb 09, 2012 1:41 pm
Forum: Technical Discussion
Topic: Project 100mpg
Replies: 63
Views: 32814

Re: Project 100mpg

I don't if someone already posted about this, but what was mentioned above about drawing a vacuum in the crankcase improving power is because it reduces drag resulting from oil in the crankcase. The less the drag, the less power losses from inefficiencies. If it was already posted about, sorry for b...
by jrjanes
Wed Feb 08, 2012 11:11 am
Forum: Technical Discussion
Topic: Starting help
Replies: 4
Views: 2806

Re: Starting help

Alright thanks I'll take a look at that, I've also had an inline filter for the gas since I got it so I know it's getting clean fuel at least.
by jrjanes
Tue Feb 07, 2012 11:50 pm
Forum: Technical Discussion
Topic: Starting help
Replies: 4
Views: 2806

Re: Starting help

Also, When I look at the plugs after turning the engine over a bunch, there seems like there is no fuel on the plugs.
by jrjanes
Tue Feb 07, 2012 11:47 pm
Forum: Technical Discussion
Topic: Starting help
Replies: 4
Views: 2806

Starting help

Ok so I've got a 79 cb650, and I'm having trouble starting it all of a sudden, I have done the HEI ignition upgrade with stock coils, but I'm pretty sure it's not electrical cause I can get it to turn over a few times with starting fluid. I have thouroughly cleaned the carbs twice now and the pilot ...
by jrjanes
Sun Feb 05, 2012 6:25 pm
Forum: Technical Discussion
Topic: choke help!!!
Replies: 5
Views: 3512

Re: choke help!!!

thanks alot
by jrjanes
Thu Feb 02, 2012 10:54 pm
Forum: Technical Discussion
Topic: choke help!!!
Replies: 5
Views: 3512

choke help!!!

Hey so I have a 79 cb650 and the choke cable mount on the carbuerators sheared off. It's the little black plastic piece that's necessary to work the choke. Does anyone know where I could find that without buying a whole new set of carbs?
by jrjanes
Thu Feb 02, 2012 12:35 pm
Forum: Technical Discussion
Topic: GM HEI: Cheap and Extremely Effective Ignition Upgrade
Replies: 406
Views: 365150

Re: GM HEI: Cheap and Extremely Effective Ignition Upgrade

Hey i'm new to the forum, but I tried the upgrade with stock coils and I had a helluva strong spark resulting from it. Unfortunately as soon as I wired it up last night, my choke cable broke, so now it's back to mechancial.

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