I was wondering who if anybody did this and how did it work. Was it as good as a spool or a quaife? Could u drive this on the street? Thanks guys.

 

I've welded a diff before and it's the same cocept as a spool. Completely locks up both wheel so that equal power is transmitted under any condition. I never broke it either and we put 480hp to the wheels. Just make sure the weld fully penetrates the diff because its like a huge heat sink. You can drive it on the street but never at high speeds. Turns would have to be made under 5 MPH and tight radius turns will need to be made in 5 turns. I would HIGHLY recomend that nobody drive on the streets with a spool of welded diff due purely to safety reasons.

 

the least that you can do is buy a spool, its cheap... i wouldnt do any micky mousing and weld up a stock diff... when it blows, its gonan blow...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Race ***** &raquo;</TD></TR><TR><TD CLASS="quote">the least that you can do is buy a spool, its cheap... i wouldnt do any micky mousing and weld up a stock diff... when it blows, its gonan blow...</TD></TR></TABLE>

people have been welding diffs for longer than you and high have been alive, if you trust your own welding skills or have someone that you trust to do this type of thing, i wouldn't be too worried about it. i'm planning on having my done some time down the road

 

i welded mine last year 400whp and it held. Def. not streetable,works like a spool.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Race ***** &raquo;</TD></TR><TR><TD CLASS="quote">the least that you can do is buy a spool, its cheap...</TD></TR></TABLE>

since when are spools cheap?

 

BTW i am going with an LSD this year. Tired of the tuff steering and chance of hitting the wall

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 86si &raquo;</TD></TR><TR><TD CLASS="quote">i welded mine last year 400whp and it held. Def. not streetable,works like a spool.

since when are spools cheap?</TD></TR></TABLE>

spools are around 250+350. can find them all over the place for around that price. tgarciaracing was selling one i believe for around that price.

 

I have richmond spools in stock for a couple of different apps.

 

Thanks guys! I appreciate that no one hit me up with a smartass reply.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JoeD427 &raquo;</TD></TR><TR><TD CLASS="quote">I was wondering who if anybody did this and how did it work. Was it as good as a spool or a quaife? Could u drive this on the street? Thanks guys.</TD></TR></TABLE>

I ran a welded diff. all five years I raced. It is a pain to turn the car, but it only costs about $1.00 in welding rod to make it.......and you are good to go. A welded stock diff. is heavy, but if you compare it to a real-deal spool, I would say that it is actually stiffer and probably promotes longer FD gear life.......just my opinion.

ZEX Man

P.S. I know NHRA bans welded diffs, but how will anyone know without tearing your axles out?.......

 

I've welded a couple that both ran for a long time and didn't break. I have seen some break though. It's all in how it's welded.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">I've welded a couple that both ran for a long time and didn't break. I have seen some break though. It's all in how it's welded. </TD></TR></TABLE>
have bob weld it and you'll be ok.

 

I'm recently getting into drag racing having come from many years of SCCA roadracing (anyone see the GP race from the runoffs? the orange rabbit is ours). We've run welded diffs since the 80's and have only recently lost our first one. The last three that we have done (for backup trannies) had been magnafluxed before and after welding to reveal stress risers. If there are no cracks, we run it.

I have no idea as to how someone might have run one on the street. It is a bitch to turn unless you are running full bore with one wheel occasionally in the air. The biggest sufferer of the welded diff is the CV joints. We have always built axles with new GKN/Lobro joints for the national championships and used those axles for the next year in regional racing and they have held up well.

For drag racing, I'm setting up the suspension to allow the least stress on the CV joints while keeping my tires flat on the track. I'm planning on being nice to the diff by easing into the launch, center sprung clutch, and the correct tire selection. All these should limit the hardship to the diff and help the tranny live until we do some sorting.

We have about 30 trannies at our shop and tons of gear options. We can weld a diff, select optimum gearing and rebuild the tranny for $60. That seems way cheaper than a spool to me.

Thanks for letting a 'dub guy post.

dave......

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by msmotorsports &raquo;</TD></TR><TR><TD CLASS="quote">I would HIGHLY recomend that nobody drive on the streets with a spool of welded diff due purely to safety reasons. </TD></TR></TABLE>

what will happen if you weld the diff?

 

Spools are a pain in the *** and I would not recommend them on the street. We had the CircuitWorx Stage 2 driveline in Duc's car last year and driving his car on the street was horrible. You'd have to rev it up and spin the tires just to make it around a 90 degree turn (ie. sitting at a stoplight then making a right hand turn). With slicks at the track it was even worse, couldn't turn around at the end of the track without reversing. If you've got the money just get a Quaife, or any LSD for that matter.

 

back when my car was my daily driver i cruised for a year with a welded diff never had a problem and my forarms got stronger

Beau