astr, thats brilliant !! i knew it was real close to the 2F i pulled out.
isuzu 4BD1T swap?! (1 Viewer)
- Thread starter orangefj45
- Start date
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If the factory tire size is 30" your gear is off by 3/10th's
REcalculate w/ 3:90 gears (act 3:91)
Huh? I am not exactly sure what you are talking about. I used an online gearing calculator and input the following:
Final drive - 4.11, trans ratio - .70 (gm 700r4 overdrive) and tire size of 33".
Am I missing something?
Going for four!!!
I DO NOT KNOW THE FACTORY TIRE SIZE!!!!
I DO KNOW THE FJ80 DID NOT COME WITH 33'S
I DO KNOW THEY CAME WITH 4:11'S
WHEN YOU ALTER THE O.D OF THE TIRE SIZE YOU EFFECTIVELY CHANGE IT'S FINAL DRIVE!!!!
THE FORMULA I USE IS .10 PER 1" IT WORKS AS TIRE SIZES ARE NOT EXACT!!!!!
AGAIN, INCREASE IN TIRE = DECREASE IN GEAR RATIO.
YES IT HAS 4:11 BUT NOT ACCURATE WITH 33'S WAS FOR FACTORY TIRE THOUGH....................
Sorry, didn't mean to upset you. I don't have a formula for calculating the engine speed (apparently not as smart as you). I found a site in which you enter the variables (tire size, final drive and trans) and it gives you the engine speed at a given mph (it doesn't know your factory tire size). I understand that changing the O.D. of the tire effectively changes the final drive ratio. I am pretty sure the calculator I used takes it all into account. The 1/10 per 1" is good to know though.
Rusty
By the way, what does "going for four" refer to?
Rusty
By the way, what does "going for four" refer to?
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It's not complete, possibly it never will as there'll always be something to add or improve.
But functionally it's almost there. I just need to put in the front timing gear cover and water pump.
I've been busy doing nothing lately.Mid winter holiday.
it looks like you have a plate modeled up to connect to the isuzu engine? I am working on laying up the isuzu/a440f adapter plate, and make a mock up of this in wood or something.
any chance you can reveal that plate geometry for the isuzu? one hole patterns worth of guessing taken care of!
You want bellhousing bolt pattern?
No problem, I'll post something up from home tonight.
Bellhousing as requested.
Please note, these are my best measurements but haven't been verified by anyone else.
http://users.actrix.co.nz/dougal.ellen//4BD1T Bellhousing.PDF
Please note, these are my best measurements but haven't been verified by anyone else.
http://users.actrix.co.nz/dougal.ellen//4BD1T Bellhousing.PDF
Dougal, you've measured this stuff yourself from an actual motor no doubt. What I wanna know is, is there a site on the web somwhere that has this type of dimensioning for common motors. I also realise there are probably specialist sites that have specific info that that site is interested in, but what I'm after is 1 site that covers numerous common motors. Any ideas........
That is nice work! I can appreciate how much effort went into creating that drawing.
Dougal, you've measured this stuff yourself from an actual motor no doubt. What I wanna know is, is there a site on the web somwhere that has this type of dimensioning for common motors. I also realise there are probably specialist sites that have specific info that that site is interested in, but what I'm after is 1 site that covers numerous common motors. Any ideas........
The SAE standard bellhousing dimensions are available somewhere online.
Otherwise you're looking into specific manufacturers data. They usually only publish mounting drawings for industrial engines, which in the case of the 4BD1 has a different bellhousing.
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4bd1t bolt pattern
thanks dougal, that is great. 425 mm PCD - this looks like the hole center to hole center dimension. whats PCD stand for? about 8 3/8 inches radius.
I will work on the landcruiser tranny bolt pattern, and will try and come up with similar measurements. thanks again!
thanks dougal, that is great. 425 mm PCD - this looks like the hole center to hole center dimension. whats PCD stand for? about 8 3/8 inches radius.
I will work on the landcruiser tranny bolt pattern, and will try and come up with similar measurements. thanks again!
PCD is Pitch Circle Diameter and yes it's the circle which passes through the centre of all the bellhousing bolts.
Happy to help.
engine tranny AND transfer case,,,, who's gonna swap it in?
http://cgi.ebay.com/ebaymotors/99-2...002QQitemZ120159142422QQrdZ1QQsspagenameZWDVW
http://cgi.ebay.com/ebaymotors/99-2...002QQitemZ120159142422QQrdZ1QQsspagenameZWDVW
Hmmmmm........ Too bad it's a stick for my application needs. He doesn't state anything about tranny/transfer so it could just be for the motor even though they're pictured!
maybe,,, i was thinking that stick mighta been for the tcase, but now i think its the full time one speed tcase.
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I'm not sure that's a t-case, I think maybe it's tranny with a PTO output...
Isuzu PTO's usually bolt into the side of their gearboxes. The 6 bolt cover over the PTO port can be seen on most heavy duty gearboxes from the US, japan or wherever.
you got it TNT,,, even thought the add says NPR its clearly not. the shifter is the giveaway, i'm surprised the others especially dougal didnt pick that up even after i mentioned the shifter.
bad bad mr dougal
bad bad mr dougal
