Curb weight reduction
Apr 21, 2017, 10:02 AM
#256
Step 1. Buy my car
As for random things I've done to reduce weight (it has become a drag car at this point
):
Motor mounts -> ~18 lbs lighter
Dash bar/steering column -> ~20 lbs lighter
Intercooler -> 13lbs total weight with piping (rated to 500+ HP)
Fuel Cell -> ~30lbs lighter + 60lbs less fuel weight (when full)
Side exit exhaust -> ~3 lbs total weight
Tial turbine housing/tubular manifold -> ~18lbs total weight
Electric water pump and power steering pump
Manual belt tensioner (only alternator is crank driven)
As for random things I've done to reduce weight (it has become a drag car at this point
):Motor mounts -> ~18 lbs lighter
Dash bar/steering column -> ~20 lbs lighter
Intercooler -> 13lbs total weight with piping (rated to 500+ HP)
Fuel Cell -> ~30lbs lighter + 60lbs less fuel weight (when full)
Side exit exhaust -> ~3 lbs total weight
Tial turbine housing/tubular manifold -> ~18lbs total weight
Electric water pump and power steering pump
Manual belt tensioner (only alternator is crank driven)
That's 13 pounds for intercooler, Tial BOV, and Adel Wiggins clamps...
Oh, and it's a Garrett core...that was cheap...
22"x12"x2.5"
Large frontal area and thin core maximizes efficiency while moving.
Tall core so there is a large number of flow channels helps reduce pressure drop of the thin core.
The one down fall that was unexpected but explains the low weight, it is a straight internal fin instead of the staggered fin typical of the Garrett cores. This reduces pressure drop but has a big impact on thermal efficiency.
Basically, I've given up internal heat transfer to reduce pressure drop but maximized frontal area to get that heat transfer back.
Apr 22, 2017, 03:11 PM
#257
IMPACT BAR - MITSUBISHI (MN126523)
https://www.mitsubishipartscentral.c...t-bar-mn126523
Compare
US diagram https://www.megazip.net/zapchasti-dl...upport-1868705
w/
EU diagram https://www.megazip.net/zapchasti-dl...upport-1886217
Apr 23, 2017, 02:14 PM
#260
Isn't the bumper going to be pulled to the driver's side, once the tow truck grabs the straps and pulls it straight? Or is the video playing tricks with my eyes? Looks like it comes out at an angle.
And that 10mm bolt sure is a lot smaller than the ginormous one I put through my crash beam LOL
Do you feel that will hold if you need to pulled from gravel?
And that 10mm bolt sure is a lot smaller than the ginormous one I put through my crash beam LOL
Do you feel that will hold if you need to pulled from gravel?
Apr 23, 2017, 03:39 PM
#261
I think it would be fine. You could also get a lightweight northsouth bar with integrated tow eye from Ross Sport http://www.rosssport.com/Brands/ROSS...7-9-RSCH79LWNS
I think Racefab also does them. http://racefab.co.nz/
I think Racefab also does them. http://racefab.co.nz/
Apr 23, 2017, 04:02 PM
#263
I think it would be fine. You could also get a lightweight northsouth bar with integrated tow eye from Ross Sport http://www.rosssport.com/Brands/ROSS...7-9-RSCH79LWNS
I think Racefab also does them. http://racefab.co.nz/
I think Racefab also does them. http://racefab.co.nz/
I already have a tow hook on the brace. but a strap there would lift my bumper cover right off it's bolts.
Thanks, guys. I'll start working on a new method.
Last edited by kaj; Apr 23, 2017 at 05:51 PM.
Apr 23, 2017, 04:06 PM
#265
Incase you guys talking intercoolers missed this...
That's 13 pounds for intercooler, Tial BOV, and Adel Wiggins clamps...
Oh, and it's a Garrett core...that was cheap...
22"x12"x2.5"
Large frontal area and thin core maximizes efficiency while moving.
Tall core so there is a large number of flow channels helps reduce pressure drop of the thin core.
The one down fall that was unexpected but explains the low weight, it is a straight internal fin instead of the staggered fin typical of the Garrett cores. This reduces pressure drop but has a big impact on thermal efficiency.
Basically, I've given up internal heat transfer to reduce pressure drop but maximized frontal area to get that heat transfer back.
That's 13 pounds for intercooler, Tial BOV, and Adel Wiggins clamps...
Oh, and it's a Garrett core...that was cheap...
22"x12"x2.5"
Large frontal area and thin core maximizes efficiency while moving.
Tall core so there is a large number of flow channels helps reduce pressure drop of the thin core.
The one down fall that was unexpected but explains the low weight, it is a straight internal fin instead of the staggered fin typical of the Garrett cores. This reduces pressure drop but has a big impact on thermal efficiency.
Basically, I've given up internal heat transfer to reduce pressure drop but maximized frontal area to get that heat transfer back.
Bar and plate or tube and fin core?
Apr 23, 2017, 07:34 PM
#267
Newbie
Well as for the crash beam, when we smacked the rt front at Road Atlanta last year it crushed the upper rail and bent the lower rail on the right side. With a beam in place it would have also bent the left lower rail. It's one of those things, screwed if you do, screwed if you don't.
As for a front tow attachment. we had a tow eye bolted to the lt lower rail bumper bar mount.
It held up fine. The mount/rail did not. The tow eye ripped the mount right off the frame rail when they pulled the car back on the track.
Anywho we continue on the new car's weight reduction. Today was a work out. Pulled the front bumper (Voltex on the way) Also removed the rad/intercooler/complete A/C system. Also gone was the big battery, and a bunch of misc brackets. Bye bye to the stock turbo piping, it's being replaced with Titanium. Along with an FP HTA71 turbo. Yanked the dash out, said farewell to the stock evap housing and blower case. Installed the modded versions. New rad/ intercooler on stand by for install.
Right at 150-155 pounds, in loss. Not counting the front bumper bar. And that was using a scale to check weight differences between old and new, and anything not going back into the car.
Even managed a few non weight items. Seat harnesses eye mounts installed, roll bars in and out 3 times to locate mount holes. Even managed to pull the turbo and intake off the spare engine. Turbo will be replaced with the 71 and then it will go into the new car. Intake gets the finishing touches on the egr removal, and a set of 2000cc injectors to go with it , also for the new car.
Lastly the old plastic front bumper lower close out panel has been replaced with an aluminum version.
As for a front tow attachment. we had a tow eye bolted to the lt lower rail bumper bar mount.
It held up fine. The mount/rail did not. The tow eye ripped the mount right off the frame rail when they pulled the car back on the track.
Anywho we continue on the new car's weight reduction. Today was a work out. Pulled the front bumper (Voltex on the way) Also removed the rad/intercooler/complete A/C system. Also gone was the big battery, and a bunch of misc brackets. Bye bye to the stock turbo piping, it's being replaced with Titanium. Along with an FP HTA71 turbo. Yanked the dash out, said farewell to the stock evap housing and blower case. Installed the modded versions. New rad/ intercooler on stand by for install.
Right at 150-155 pounds, in loss. Not counting the front bumper bar. And that was using a scale to check weight differences between old and new, and anything not going back into the car.
Even managed a few non weight items. Seat harnesses eye mounts installed, roll bars in and out 3 times to locate mount holes. Even managed to pull the turbo and intake off the spare engine. Turbo will be replaced with the 71 and then it will go into the new car. Intake gets the finishing touches on the egr removal, and a set of 2000cc injectors to go with it , also for the new car.
Lastly the old plastic front bumper lower close out panel has been replaced with an aluminum version.
Last edited by EvolTweetyBird; Apr 23, 2017 at 07:39 PM.
Apr 24, 2017, 01:11 AM
#268
right now, i used to tow strap mounts. I bolted one to each spot where the crash beam mounts. Essentially, it's ghetto but now has two bolts to share the load. I don't plan on driving a course with gravel pits.. but you never know.
So far, I've been lucky enough to be sitting on asphalt run-off, any time I've needed a tow.
