Hanks URQ 2.6L Autopsy

[pilihp2]

Is that a cut/hole through the floorpan?
wow.

so much awesome.

[quattro87]

I wonder if it would have busted a one piece diff the same way? How did the drive shaft fare?

[Hank]

The driveshaft is just fine. Just a couple of rub marks. I don't know if a one piece would have broke.. I would probably say it is a stronger assembly. This failure looks like it pulled out the threads, and then broke the mounts on the top. I didn't really want to take the diff out and weld it, but I have little choice. I wish I had a spare.

[audifreakjim]

Wow, that's impressive! Maybe you could make a cradle for the diff to help reduce the forces on the mount points. Let the cradle take care of the forces out to the subframe, and now the diff just has to worry about staying clamped in the cradle.

[bimmerboy]

Wow. That all happened on snow tires? Jesus.

[a_CQ]

jesus. Yeah, you need to fix that up quickly and do that track event...I think you'll quickly forget about drag racing or launching the car so often..

Hap, your tires are by no means "not so sticky", unless you drive on them in the winter as well, in which case they'd be hard as a rock. You might just not be as aggressive on your car as Hank is...and the UrS is a good bit heavier than this UrQ.

[PRA4WX]

jesus. Yeah, you need to fix that up quickly and do that track event...I think you'll quickly forget about drag racing or launching the car so often..

Hap, your tires are by no means "not so sticky", unless you drive on them in the winter as well, in which case they'd be hard as a rock. You might just not be as aggressive on your car as Hank is...and the UrS is a good bit heavier than this UrQ.

700+hp is a "good bit" more horsepower.

[a_CQ]

~200 more, vs 1,000lbs difference? I think HP/wt, Hank's car wins...if there was some competition=)

[PRA4WX]

Me thinks You mis-calculate on both accounts. (This turbo stuff is tricky, i know :-p ) Based on the dyno numbers both these gents have made public (and i'm not entering the debate as to whether both dyno's are comparable or not) the difference is larger than 200whp, and the difference in weight between the two, i would bet is a bit shy of 1000lbs. Not to split hairs.

[fasterthenrs2]

Damn that’s some carnage, you did not brake that on a launch, launch broke a axle than that thing got bounded up and gave that thing yank of the live, when I bought my CQ previous owner was driving around with seized inner cv that resulted in a broken sub frame and one of the mounts

[fasterthenrs2]

Or maybe you did snap that at launch 8Krpm clutch drop with 25 psi will do serious carnage ;D

[Hapster]

Yeah, the exhaust "ding" is from when I lost an exhaust hanger, and the aluminum exhaust crashed on the axle for a couple of miles before I limped over to Daves house(the warehouse) for a replacement. I welded on thick portion where that would potentially happen in the future, so it woudln't wreck the exhaust like last time.

The exhaust is somewhat hard mounted to the body, and the subframe is hard mounted to the body, so I don't think they ever come into contact unless a hanger/hardmount breaks.

Hap, the urs4 axles are huge. This is actually what I plan on doing. I want to use the inner CB and shaft of the urS shaft(they are hollow and friction welded together as two pieces) and weld them to an URQ/5kq outter shaft and CV with a moly center, and then a sleeve over the welded portion. I think this would make them a little more robust, and get a 108mm CV back that appears to be more weak than the shaft..

Lets not kid ourselves though, I'll post pictures that push the point, but my rear axles are twisted every bit of 180 degrees since i painted white stripes on them last time

I ordered a new rear axle that I will keep in the car as an emergency when I see track duty, I had the option to choose an 84 4000q, and did. I wonder if it will show up as a 108 inner, or the 4kq 100mm??

Well, it turns out that I needed axles right now. Dave Jones sent off my front axles to an axle shop here in Denver favored by all the race car builders including his buddies at 3R Racing while I was in Kauai. They were on the verge of failure. Everything is hardened with Titanium this and that for all 4 axles, he had spares since the ones he sent could not be rebuilt. I can get the specs if you'd like. Pictures will also follow as I anticipate installation next week some time.

Hap, with some kind of axleleration not from Evahoost, Maguire

[Hapster]

jesus. Yeah, you need to fix that up quickly and do that track event...I think you'll quickly forget about drag racing or launching the car so often..

Hap, your tires are by no means "not so sticky", unless you drive on them in the winter as well, in which case they'd be hard as a rock. You might just not be as aggressive on your car as Hank is...and the UrS is a good bit heavier than this UrQ.

I'd say I'm a moderately aggressive driver that doesn't put others in harms way. With about 850 ft/lbs of crank torque, my bet is I could just about get any tire to break loose. I do drive the RE-11s in the winter but even in the winter we're often in mid 60s temps in not from Evahboost.

Hap, with some kind of breakin loose near Everboost, Maguire

[BlackBox]

Hank, I'm pretty ignorant when it comes to which drivetrain parts fit what, but there's a V8Q (and probably a 5KQT) down at Kurt's Pic-a-Part if that helps. Cheap parts.

[Hapster]

Me thinks You mis-calculate on both accounts. (This turbo stuff is tricky, i know :-p ) Based on the dyno numbers both these gents have made public (and i'm not entering the debate as to whether both dyno's are comparable or not) the difference is larger than 200whp, and the difference in weight between the two, i would bet is a bit shy of 1000lbs. Not to split hairs.

Although bench racing is fraught with danger and misunderstanding, it can be fun at times. The cool thing about Hank's car and the Monster is we're both at similar altitudes. Given all the variables involved, lets look at a comparison. Just for fun, I'm including the Bugatti Veyron.

Dyno Hp-- BV/Lotshp, Hap/755hp, Hank/520hp
Crank Hp- BV/1001hp, Hap/906hp, Hank/624hp
Weight--- BV/4486lbs, Hap/3700lbs, Hank/2700lbs
Lbs/Hp--- BV/4.48, Hap/4.08, Hank/4.37

May the racing begin.

Hap, with some kind of numbahs near Everboost, Maguire

[fasterthenrs2]

Me thinks You mis-calculate on both accounts. (This turbo stuff is tricky, i know :-p ) Based on the dyno numbers both these gents have made public (and i'm not entering the debate as to whether both dyno's are comparable or not) the difference is larger than 200whp, and the difference in weight between the two, i would bet is a bit shy of 1000lbs. Not to split hairs.

Although bench racing is fraught with danger and misunderstanding, it can be fun at times. The cool thing about Hank's car and the Monster is we're both at similar altitudes. Given all the variables involved, lets look at a comparison. Just for fun, I'm including the Bugatti Veyron.

Dyno Hp-- BV/Lotshp, Hap/755hp, Hank/520hp
Crank Hp- BV/1001hp, Hap/906hp, Hank/624hp
Weight--- BV/4486lbs, Hap/3700lbs, Hank/2700lbs
Lbs/Hp--- BV/4.48, Hap/4.08, Hank/4.37

May the racing begin.

Hap, with some kind of numbahs near Everboost, Maguire

Forget nr and altitudes put them on strip BV will be between 10.4 - 10.6
now just need Ur and urs times get on it :wink:

[PRA4WX]

Me thinks You mis-calculate on both accounts. (This turbo stuff is tricky, i know :-p ) Based on the dyno numbers both these gents have made public (and i'm not entering the debate as to whether both dyno's are comparable or not) the difference is larger than 200whp, and the difference in weight between the two, i would bet is a bit shy of 1000lbs. Not to split hairs.

Although bench racing is fraught with danger and misunderstanding, it can be fun at times. The cool thing about Hank's car and the Monster is we're both at similar altitudes. Given all the variables involved, lets look at a comparison. Just for fun, I'm including the Bugatti Veyron.

Dyno Hp-- BV/Lotshp, Hap/755hp, Hank/520hp
Crank Hp- BV/1001hp, Hap/906hp, Hank/624hp
Weight--- BV/4486lbs, Hap/3700lbs, Hank/2700lbs
Lbs/Hp--- BV/4.48, Hap/4.08, Hank/4.37

May the racing begin.

Hap, with some kind of numbahs near Everboost, Maguire

I just love bench racing! :-)

[PRA4WX]

Buuut, Hap, not to be picky but as you brought into question recently my flying, i believe Hanks ratio is 4.3269 Lbs/CrankHP. Not 4.37....or do i miss something?! ;-)

[Hank]

IN order to make "Monster" status, I need to make 561whp next time at the dyno. That will give me the same 4.08:1 lbs per hp.

I spent a couple hours at the shop tonight. I have axles back in the car, in the 108mm variety. The passenger is the oem URQ, but the passenger is my own make from an urS shaft and a 5kq outter.


Basically, the shafts are hollow, so I made a dowel that would be pinned and serve as an alignment more than anything. Then I did a root pass to connect the dowel to the beveled shafts( they are about 3/8" wall tubing, and appear to not have a heat treat on them based on how they lathe). I then layed 2 more passes, untill the height of contour was enough that I could lathe it even. I then made a sleeve that went over the top of the weld, and thenwelded it. A basic slipjoint, affair.

I am excited to see how it fairs. I figure this platform is a good one to test the idea. If the other 2 axles are any indication, This one will be tested enough. I put hte standard white line son it to monitor twist.

Last, I took the oportunity to improve the fuel system. I think my restriction happens on the outlet of the tank. It is only about a 7/16ths id outlet, and I think the 2 044s really need more than that So I opened up the tank(cut it open) yanked out the old hardline, and fabbed out a 3/4" hardline that rests in its place. I had to come home, but I just need to weld it up. Hopefully this will let me run 120psi of rail pressure all the way to redline, instead of the 70psi I see now(70psi-30psi boost= 40psi at injector) If I can, I think I can raise the boost to around 38psi for the next dyno day in April, and I am hoping for 600whp.

PS, that picture was shot with my new HTC EVO 4G. Yes, I have a phone again for all of those who are A) trying ot get ahold of me or B) sick of hearing that my voice messages are full.. Sorry it took so long

[85oceanic]

I know I'm late to the game, but holy cow Hank. That looks like it was loud, just some more character.

[quattro87]

Looks good Hank. Did you purge the tank with Argon before cutting and welding? We've had enough explosions at the Lab without a small gas tank exploding in your face. Oh wait.....you didn't have to worry about a gas explosion because you use E85 and not gas. :wink: Where did you make the cut? You know that my tank has been sitting next to the coupe gt now for a few months because I wanted to do the same thing.

[Hank]

I should have snapped some pictures of the tank, but I basically cut into the bottom most portion to remove the tubes. The tank is really well made. through the sensor hole, you can see the return "candy cane" but what you do not see is that the feed for the pump is right next to it facing the back of the tank. This is nice as under acceleration, it all sloshes there. Problem is that it is a very small tube for e85 and our power levels.

I purged the tank with CO2. It had been drying under heat lamps for 2 days as well.. It was very dry at that point, and and didn't even smell like gas after I purged it. I still must admit I put the full ear muffs with ear plugs under on, put the full face shield on, with a jacket on and coveralls.

[quattro87]

Along with welding larger size bungs into the bottom I wanted to clean a fairly rusted inside. Where would the best place be to cut and be able to get to the entire tank? Isn't there a baffle near the bottom?

[Hank]

I would cut just above the baffle. It is about two inches off bottom of the tank. It wells back together very nicely from the taking I havedone. I felt bad cutting mine apart as it was I'm perfect shall but what can you do.

[quattro87]

Well I thought about a fuel cell, but that brings it's problems also and especially on a E85 DD where range becomes important. The large Urq tanks are nice in that regard, except when paying at fill up time. My tank is pretty rusty from sitting for so long so I don't mind cutting, but didn't want to cut and find out that I still couldn't get to the tank. You say you have already tacked it back together so no pictures to be had of the inside?