Chassis Build Up & Design

Small update today.

Last night I finished preparing the passenger manifold.  Bored out the flange to fit a 2.5" exhaust tube and cut off the remainder of the flange that won't be needed.  The driver side is pretty much ready to weld up and finish the extension, but I'm short a small bend to complete the passenger.

Looks great, definitely lose the ABS, as that was my biggest complaint around the track. When you want to break hard and the ABS is telling you to drive slower and puching you out in the turns.

If you want to have selectable ABS, put an interrupt switch on the brake lamp input to the ABS module. If the module doesnt know you're on the brakes, it won't try to pulse them.

Now I'm wondering what could be combined into a 'track mode' switch.

I apologize if you have answered this before or it is posted somewhere else, but what dimensions did you end up going with for the UB UCA's? I emailed them but have not received a response. I guess they don't want my business.

theres a part number.
look in the stickies on s10 planet where i posted them.

and call. they answer phones, but not e-mails.

kinda like me.....

michael

theres a part number.
look in the stickies on s10 planet where i posted them.

and call. they answer phones, but not e-mails.

kinda like me.....

michael

What he said.  I can't think of where I have them written down or posted to be honest.  If you want me to check the sales receipt send me a PM sometime this upcoming weekend because I'm really forgetful.

I'm trying to stay focused on the exhaust, so started mocking up the y pipe.  Decided to make use of having the frame on a welding table, since I didn't have the tube on hand that I need.  I fabbed up some simple brackets to locate the tube where I need it and once I get the tube in I'll just drop it in place and cut to length.

Tons of room to the body on the driver side.


IMAG0042 by TheHarley, on Flickr


IMAG0043 by TheHarley, on Flickr


IMAG0044 by TheHarley, on Flickr

Not nearly as much on the passenger side, but it snakes through just fine.  Had to mount the O2 sensor forward because of it.  Not excited for the extra length of wire I'm going to have to run up and around the engine, but it is the best option for heat avoidance and service.


IMAG0045 by TheHarley, on Flickr


IMAG0046 by TheHarley, on Flickr

The passenger half of the Y-pipe is going straight back.  The muffler should pretty much be in line with this and I'll purchase it to offset for the tailpipe as needed.  The crossover will happen behind/underneath the tailhousing of the transmission.  Not enough clearance to go under the transmission without hanging below the frame.


IMAG0050 by TheHarley, on Flickr

Next I really should mock up my final trans X-member, so that I can account for packaging that.  I did say I was focusing on the exhaust, but that seems like the next step in terms of things that could get in the way of the exhaust.

looking good! you do solid work

Better than nothing... I've got the transmission cross member mostly roughed out.  Bent about a 1.5-2" jog in some round tubing and using the factory mounting holes with a tiny twist I'll share when I get there.  Pictures are easier than words.

Here's the tube in place.  Not sure if you can see it, but the jog isn't parallel to the ground; it is rotated back and down a bit.  Needed the tube to move both back and down and this worked out the easiest.





The mount plate is a pretty simple design.  I just slotted a 1/4" plate for the two outboard holes on the mount, then drilled a hole to the size of the cross member and cut that plate in half for the supports.  The excess metal still needs to be trimmed off.

Any update is a good update!  Looking good

More cross member progress.  I have a few small pieces of metal left to tack into place, but it now supports the transmission without any help.


IMAG0237 by TheHarley, on Flickr


IMAG0238 by TheHarley, on Flickr

Compare this picture to my previous post.  Weight savings?  Sure haha


IMAG0239 by TheHarley, on Flickr

Passenger side mount is slotted for any cross car variance.  GM did this too, so I'm just copying.

IMAG0240 by TheHarley, on Flickr

Added an angled filler plate and prettied it up with the grinder.  Should tie the plate in better to the tube too.


IMAG0241 by TheHarley, on Flickr


IMAG0242 by TheHarley, on Flickr


IMAG0243 by TheHarley, on Flickr

side gussets are kinda girly looking.
can we get a butterfly tramp stamp on your tailgate?

side gussets are kinda girly looking.
can we get a butterfly tramp stamp on your tailgate?

Meh.  They'll probably look better once welded.  Besides they were pre-cut on the shelf.  I've spent enought time cutting and grinding for this cross member that I nearly don't care what something under the truck will look like.

More slow progress today.  At least it feels that way to me.  Y pipe is nearly laid out though.  Most of the remaining pieces are already cut and prepped.  Just have to finish cutting the second piece for the merge and the rest should fall in place.


IMG_6574 by TheHarley, on Flickr


IMG_6575 by TheHarley, on Flickr


IMG_6576 by TheHarley, on Flickr


IMG_6577 by TheHarley, on Flickr


IMG_6578 by TheHarley, on Flickr


IMG_6579 by TheHarley, on Flickr


IMG_6580 by TheHarley, on Flickr


IMG_6581 by TheHarley, on Flickr


IMG_6582 by TheHarley, on Flickr


IMG_6583 by TheHarley, on Flickr


IMG_6584 by TheHarley, on Flickr


IMG_6585 by TheHarley, on Flickr

http://www.yellowbullet.com/forum/showthread.php?t=232215
motivation

Those are just silly. They're cool as hell looking, but assuming those are mini-fuses, those panels are about the size of an 8x10 picture. Where would you put a fuse panel that big, and for that matter, why?

Those are certainly fancy....

but my real motivation as of Tuesday night is having the merge complete.

A bit tighter on the damper than I was hoping, but since I probably won't run it I'm not worried.  Still have a half inch clearance at the tightest places.


IMAG0273 by TheHarley, on Flickr


IMAG0272 by TheHarley, on Flickr


IMAG0271 by TheHarley, on Flickr


IMAG0270 by TheHarley, on Flickr

agreed, they are huge, i prefer a tighter package, but most street car bodied race cars have a crapton of interior surface area left over.
especially to "fill" triangles of their cages.

nicely laid out apart electronics makes troubleshooting a breeze.


Harley, looking good.

but i forget. are you making a perpetual motion engine with no exhaust outlet?

-edit-

this is nice though

Can I have?

but i forget. are you making a perpetual motion engine with no exhaust outlet?

Ha!  That would be convenient.  Just don't have any 3" stainless tube around to figure out the cut off and wrap up the outlet.

Ok, now that relay box with switches is just gorgeous, that I like, and may have to emulate. I'm about two hours of fighting away from scrapping the entire body harness.

Its not that hard to cut and crimp to length then throw a bag of zip ties at a project, anyone here can do that. Just ask the Hybridero test bench.


I think Harley's on track to have an engine harness that looks OEM with the way he's going.