So for some of you that don't know I have a 1992 2wd ext cab Toyota pickup with a 1jz swap now I want to get ready for the up comming season of drag racing and before I swap in a ford rear end I was thinking of getting the did welded so when I run a slick both wheels would burnout in the burnout box... The truck is just an occasional cruiser and mainly gonna be a drag truck but I'm getting it tuned thus spring and slicks, and I want to take it too the track! What you guys think the stock rear end would handle? Would welding it be a good idea? I just want both wheels to spin at the same time before the ford rear end swap goes in because with the ford I plan on upgrading wheels, tires and brakes, driveshaft at the same time... Thanks guys...
Personally I wouldn't run a welded rear end. I've heard the break violently when they let go. There are some people that are gonna chime in and say they are running them and have had no issues, but as a saftey aspect its a nono. Also track tech will fail you if they find it also if you are stepping up to slicks you are gonna need a drive line loop. you should check the NHRA site for the upgrades you are gonna need. "When using slicks, a driveshaft loop constructed of at least ΒΌ-inch-thick by 2-inch-wide steel strap, or 7/8-inch tubing with a minimum wall thickness of .065 inch, must be used. It must be located no more than 6 inches behind the front U-joint and must completely encircle the driveshaft. A car running street tires doesnt need a loop until it runs 12.99. " P.s. BUY MY TURBO!! Its perfect for a quick 2JZ, I had it on mine but it became too small for my setup .
I've got drift guys that are running welded diffs just fine. yes if welded it can explode worse than a regular type diff, but if done correctly it will also be stronger than the bolt together diff. Do a little more google hunting and you will find guys running welded diffs well over 500 HP
yeah i know about the driveshaft loop.. ive read about that... so a welded diff can be a big no no huh...
ya it can be. people say there is a "right" way to weld em, but if its completly outlawed by NHRA there probably is a reason... and like I said, would suck to go to tech then fail for a lame welded diff, just one tire fire it until you get that 9". whats your setup on your 2jz
I know guys in the honda scene who have welded the diff and broke them a few times, also having a welded diff in a rwd can have its short comings for sure. It will be like a detroit locker and i think it will be prone to issues while driving down the road, i "heard" it can easily get put in a ditch. - although my comments don't hold much water, i have not tried this myself, just hear say.
I've ran welded diffs in pretty much every type of rig over the years and I finally stopped breaking them when I started welding them the way I do know. I weld the side gears tand spiders to the carrier then I weld them together. Finally I drop a 1/4" piece of plate in the window between them and weld it all together. I'd weld a yota diff looong before using a spool. Granted in a street/drag application it probably won't bend like they do in the offroad world. I bet they outlawed welded rear ends when billybob would show up with a half ass bogger welded diff he did up with grandpappys old buzz box he turned up on high so it cleaned the old gear oil off as he went.
Exactly. maybe 9 out of 10 people CAN weld decently and do a good job but that one guy grenading the diff sending shrapnel in all directions makes a bad day for all. As for the actual act of doing so (assuming it's done right)...for a drag-only car the physics of it are OK. they're a bad idea (and more than a hair illegal) on the road. I'd say just run it as it is till you get the 9" and do it right.
Uhhh I'd say the physics are just a hair better than OK... Ever run an auto locker and bang a gear and have the tail wag when one axle engages before the other? Besides that all the top brackets run full spools at all times. Show me where a spool is illegal.
The way I read it is he's saying they are illegal on road. I realize the NHRA outlawed them many moons ago likely due to billybob and cousin zeke's 6013 rod exploits.
ok so ive decided not to go welded diff haha thanks for the input tho guys.. my setup is a 1jz stock twins stock boost at the momment just front mount intercooler, hard pipes, and intake... heres a link for the dyno video... it put down 260whp/266wtq in stock forum... its getting tuned with more boost and more fuel with a piggy back this spring... it boogies! YouTube - 1JZToyotaPickup.wmv
havent got out to the track yet havent drove it much... more of a garage queen lol always tinkering around... lots of stuff to install this spring!
sounds like a fun setup. converting it over to a single turbo will help get you more power and quicker spooling, those stock turbos really suck. which piggy back are you gonna run? the stock ecu can only be pushed so far, once you go stand alone these motors turn into power mosters real quick
Spools and welded diff are both illegal on the road in most civilized places. It certainly won't pass any safety inspection. Reason being that it gets sideways more easy when turning, especially in bad weather. That's why everywhere that sells them labels them "for off road use only". The 99% of people who can't drive for crap spoil it for the rest of us. just like everything Welded diff is against most racing regs. I'm fully aware most drag-only cars run spools...for good reason. toytruck: truck sounds great. Good luck, you'll need the upgraded rear when you crank up the power....well, you need it now, you'll REALLY need it then.
