ranger refit/build thread

[gwaii]

y'know...i was just thinking-if a gear drive(without idler) for the cam was used instead of the chain,that would allow the cam to continue in it's normal direction when the crank was going backward...so things driven off the cam,like the distributer and oil pump would need no mods at all.

 

[gwaii]

soooo.... you're building another truck to make me smile?

unless i die first,i'll continue building stuff.what gets built will depend mostly on what's at the top of my mind when i'm ready to start a project.

 

[CHKNFKR]

theoretically,that wouldn't even need to be done.

whern the allison engines in the p 38 were made to run opposite directions in WW II only the firing order was changed.the starter can be made to face the other direction by modifying the bell housing,and that just leaves some oil pump mods and other details.

The high idle in my wrecker crapped out on me overseas in the midle of a lift oporation, i bogged down a detroit 8v92 to the point it started running backwards. The supercharger and turbo in particular weren't too happy about it.

 

[gwaii]

The high idle in my wrecker crapped out on me overseas in the midle of a lift oporation, i bogged down a detroit 8v92 to the point it started running backwards. The supercharger and turbo in particular weren't too happy about it.

i'll bet.that one's a two-stroke,unless i'm mistaken.two strokes don't care what direction they're turning....but like you noticed,some of the peripheral equipment does.

 

[--weezl--]

y'know...i was just thinking-if a gear drive(without idler) for the cam was used instead of the chain,that would allow the cam to continue in it's normal direction when the crank was going backward...so things driven off the cam,like the distributer and oil pump would need no mods at all.

yes, yes it would... the only problem at that point is having the cam line up with the crank... depending on what motor it is, certain firing orders could possibly support that still...

 

[CHKNFKR]

y'know...i was just thinking-if a gear drive(without idler) for the cam was used instead of the chain,that would allow the cam to continue in it's normal direction when the crank was going backward...so things driven off the cam,like the distributer and oil pump would need no mods at all.

wouldnt this just cause an even bigger headache since your pistons would continue to rise and fall in the same order they always have but now your valves are opening and closing in reverse order?

 

[--weezl--]

wouldnt this just cause an even bigger headache since your pistons would continue to rise and fall in the same order they always have but now your valves are opening and closing in reverse order?

see my post

custom crank shaft would also solve that, and would probably be much easier than designing a custom cam shaft...

then the only issue would be the accessories running backwards, but then again, you could just run them all off of the other motor... then again again though, you SHOULD load both motors equally, similar to tuning dual or quad carbs to eachother, so all cylinders are contributing the same...

 

[gwaii]

wouldnt this just cause an even bigger headache since your pistons would continue to rise and fall in the same order they always have but now your valves are opening and closing in reverse order?

uh....gimmee a second...i gotta think this one out further.


you may be right,i'm not 100% sure yet.

 

[gwaii]

uh....gimmee a second...i gotta think this one out further.


you may be right,i'm not 100% sure yet.

ok....i thought it out.

it'll work,no problem.

 

[CHKNFKR]

I think its best to keep both motors turning the same direction and facing forward. Get to work welding a couple.vlocks together tom!

 

[gwaii]

see my post

custom crank shaft would also solve that, and would probably be much easier than designing a custom cam shaft...

then the only issue would be the accessories running backwards, but then again, you could just run them all off of the other motor... then again again though, you SHOULD load both motors equally, similar to tuning dual or quad carbs to eachother, so all cylinders are contributing the same...

accessories would all be run off the 'main' motor,the second one would not have anything as it's only for occasional use.the small difference in load would not matter.

 

[gwaii]

I think its best to keep both motors turning the same direction and facing forward. Get to work welding a couple.vlocks together tom!

might just have a project or two to complete first

 

[RangerSVT]

As far as the valves opening backwards, the cam is what opens the valves, so a custom cut cam will solve that. Lunati will cut any cam to the specs you give them, so no problem there. I dont see a need for a special crank...And as you said Tom, the acc are not that much a drag to worry about....
But honestly, with the numerous amount of reduction you have, unless you plan on running 84 inch tires from a front end loader, you have more than enough power and endless multiplication numbers to increase that exponentially...
SVT

 

[--weezl--]

accessories would all be run off the 'main' motor,the second one would not have anything as it's only for occasional use.the small difference in load would not matter.

sweet! this would put function to the 2 into 1 t/c's shifting abilities, between 2h and 4h, if you only wanted to run 1 motor, "2h" would be perfect for running the the front motor, though you would have to swap the direction of my picture, the one that i have as the rear motor, would have to be the front motor, that way the transmission and second transfercase would be facing forwards, but the 2 into 1 would be facing backwards

i actually did some messups in that drawing i did, now that i look at it...

actually never mind above... who says the "main" motor has to be in the engine compartment? as long as the one that is attached to the "rear driveshaft" on the first transfer case has the accessories on it... and make sure it's got an alternator with enough juice to power 2 starters and 2 sets of ignitions...

also, i would recommend a big red light next to the 2 into 1 case, that notifies you when only one motor is running... that way you don't go from 1 motor drive to 2 motor drive, when 1 is running and 1 is not...

 

[--weezl--]

lets do the numbers to see if a tc will hold up to 6500 rpm of a motor... i'll use the numbers on my truck, because i know them, ok, a 31" tire is roughly 8 feet around, which means there is 660 revolutions per mile multiplied by 4.1 gears, gives us 2706 revolutions of the driveshaft per mile, now lets figure out how fast it turns, times 60 mph 162,360 revolutions per hour, divided by 60... hmm i think i did more calculations than i needed... 2706rpm is what it sees... that can't be right, can it?

if the motor is in 1:1 gear, and at 6500 rpm, and the transfer case is in 2H or 4H, it should be 1:1 also, which means it's also spinning the driveshafts at 6500, mind you 6500 rpm in 4th gear is a lot faster than 60mph...

off topic, my mustang's transmission, and 8.8 diffs, will hold up to 4000rpm in 0.68 5th gear with 2.73 gears and 28" tall tires... now i'm lost... GWAII HELP!!!!