Post exact weights of weight reduction you have done!
May 22, 2012, 10:29 PM
#1336
Never had 1 single issue with mine. Hundreds of WOT highway pulls 1st-4th, back to back to back to back 10 sec passes without a cooloff. Not saying it won't fail, but I have put it through its paces on a regular basis without issue and will continue to use aluminum for my exhaust systems.
I just don't think it can handle that much heat for long periods of time. I will even drive the car as far as 500miles for some events and would hate for it to fall of 
Welded or seamless? CP-2 or alloy?
I'm not sure which is better for road racing, titanium, 321, or Inconel 625. Titanium will be the lightest, but would 0.035" wall titanium hold up to road-racing?
3.5" x 0.065" 6063-T6 aluminum tubing is $4.25 a foot
Compare that to $53.33 a foot for the titainium above and you can see how expensive a titanium exhaust is for the #/$ view point. Also, you can get mandrel bends in the aluminum for hardly more expense then the straight tubing. The titainium on the other hand, you'll spend hours of time and a lot of money on argon while pie-slicing bends.
Where would I run an aluminum cat-back?
Drag? Absolutely.
Auto-X? Certainly.
Street? Yup.
Road Race/Time Attack? HELL NO.
Another benefit, the aluminum actually helps calm things down a bit on noise. At least, compared to thin-wall stainless. It seems to "ring" less with each exhaust pulse. Likely just the thicker wall doing it but it is a noticable difference.
I'm not sure which is better for road racing, titanium, 321, or Inconel 625. Titanium will be the lightest, but would 0.035" wall titanium hold up to road-racing?
3.5" x 0.065" 6063-T6 aluminum tubing is $4.25 a foot
Compare that to $53.33 a foot for the titainium above and you can see how expensive a titanium exhaust is for the #/$ view point. Also, you can get mandrel bends in the aluminum for hardly more expense then the straight tubing. The titainium on the other hand, you'll spend hours of time and a lot of money on argon while pie-slicing bends.
Where would I run an aluminum cat-back?
Drag? Absolutely.
Auto-X? Certainly.
Street? Yup.
Road Race/Time Attack? HELL NO.
Another benefit, the aluminum actually helps calm things down a bit on noise. At least, compared to thin-wall stainless. It seems to "ring" less with each exhaust pulse. Likely just the thicker wall doing it but it is a noticable difference.
If it was even $25 a foot or $30 I would consider it but the $50+ a foot kills it I am thinking about just going no exhaust after the Down pipe with a turn down pipe
You can't get a lighter cat back than no cat back 
To bad it probably wont work for my track car though 
May 23, 2012, 12:13 PM
#1337
Just my opinion, but open downpipe is the worst option. It's loud as hell inside the car, falls to get the heat away from everything else on the car, and might not even be legal depending on the track/race organization.
You can build a 321 stainless catback in 0.035" wall for a reasonable cost.
You can build a 321 stainless catback in 0.035" wall for a reasonable cost.
May 23, 2012, 07:50 PM
#1340
Just my opinion, but open downpipe is the worst option. It's loud as hell inside the car, falls to get the heat away from everything else on the car, and might not even be legal depending on the track/race organization.
You can build a 321 stainless catback in 0.035" wall for a reasonable cost.
You can build a 321 stainless catback in 0.035" wall for a reasonable cost.
Do you want to build me a nice one that will help me save weight then
May 23, 2012, 07:57 PM
#1341
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I finally decided to get serious and convert my full weight evo to a drag car. Here's what I've been doing the past 3 days with my son Austin's help. We weighed most of these ourselves with a digital scale. Let me know if there's something free I'm forgetting to do that doesn't involve cutting the car up. Right now I can return the car to stock easily if necessary.
D2 coilovers 31 lbs less, weigh 34 lbs, (stock was 65 lbs)
15" Drag wheel/tire 54 lbs less, 33 lbs each or 132 total, (stock was 46.5lbs each or 186 total)
mini battery 27 lbs less
front crash beam 13 lbs
under tie bars (2) with bolts, 2.5 pounds
Spare Tire, Jack, and Tool 37lbs
Front strut tower brace 8 lbs
Oil cooler w/oil 7 lbs
wing 7 lbs
downpipe back exhaust 22 lbs
AC compressor, condenser, core and brackets 23 lbs
front speakers and head unit 7 lbs
rear speakers 8 lbs
rear crash beam 18 lbs
rear wiper 3 lbs
trunk plasic 7 lbs
Evap systme 9 lbs
washer boltle 6 lbs with half full fluid or 3 lbs without fluid
Floor mats 5 lbs
Front passenger seat 37 lbs
Rear seat bottom 9 lbs
Rear seat top 14 lbs
Carpet 17 lbs
Firewall sound padding 7 lbs
Seat belts 13 lbs
HVAC 17 lbs
The rest of the firewall sound deadening 7lbs
passenger air bag 9 lbs
AC fan 6 lbs
Dash metal 8 lbs
Front wiper assembly and motor 10 lbs
Bucket of left over bolts and screws 5 lbs
firewall padding 3 lbs
Oem clutch flywheel vs tilton twin carbon?
Small front brakes ? lbs
undertray ? lbs
stock weight ~ 3250 for my 05 EVO 8 GSR with sunroof. weight reduction so far 457 lbs so right around 2800lbs I'd guess.
To do list:
Interior Sound Deadening with dry ice? concerned it might leave an ugly mess
evap line fron under the hood to trunk area?
carbon fiber roof ? (loses 40bls on evos with sunroof)
carbon fiber trunk ?
Buschur light weight bits ?
Aluminum or carbon fiber driveshaft ?
Door crash beams 10lbs each (looks difficult and might need to wait for a roll cage for safety)
D2 coilovers 31 lbs less, weigh 34 lbs, (stock was 65 lbs)
15" Drag wheel/tire 54 lbs less, 33 lbs each or 132 total, (stock was 46.5lbs each or 186 total)
mini battery 27 lbs less
front crash beam 13 lbs
under tie bars (2) with bolts, 2.5 pounds
Spare Tire, Jack, and Tool 37lbs
Front strut tower brace 8 lbs
Oil cooler w/oil 7 lbs
wing 7 lbs
downpipe back exhaust 22 lbs
AC compressor, condenser, core and brackets 23 lbs
front speakers and head unit 7 lbs
rear speakers 8 lbs
rear crash beam 18 lbs
rear wiper 3 lbs
trunk plasic 7 lbs
Evap systme 9 lbs
washer boltle 6 lbs with half full fluid or 3 lbs without fluid
Floor mats 5 lbs
Front passenger seat 37 lbs
Rear seat bottom 9 lbs
Rear seat top 14 lbs
Carpet 17 lbs
Firewall sound padding 7 lbs
Seat belts 13 lbs
HVAC 17 lbs
The rest of the firewall sound deadening 7lbs
passenger air bag 9 lbs
AC fan 6 lbs
Dash metal 8 lbs
Front wiper assembly and motor 10 lbs
Bucket of left over bolts and screws 5 lbs
firewall padding 3 lbs
Oem clutch flywheel vs tilton twin carbon?
Small front brakes ? lbs
undertray ? lbs
stock weight ~ 3250 for my 05 EVO 8 GSR with sunroof. weight reduction so far 457 lbs so right around 2800lbs I'd guess.
To do list:
Interior Sound Deadening with dry ice? concerned it might leave an ugly mess
evap line fron under the hood to trunk area?
carbon fiber roof ? (loses 40bls on evos with sunroof)
carbon fiber trunk ?
Buschur light weight bits ?
Aluminum or carbon fiber driveshaft ?
Door crash beams 10lbs each (looks difficult and might need to wait for a roll cage for safety)
May 24, 2012, 04:14 PM
#1344
I finally decided to get serious and convert my full weight evo to a drag car. Here's what I've been doing the past 3 days with my son Austin's help. We weighed most of these ourselves with a digital scale. Let me know if there's something free I'm forgetting to do that doesn't involve cutting the car up. Right now I can return the car to stock easily if necessary.
D2 coilovers 31 lbs less, weigh 34 lbs, (stock was 65 lbs)
15" Drag wheel/tire 54 lbs less, 33 lbs each or 132 total, (stock was 46.5lbs each or 186 total)
mini battery 27 lbs less
front crash beam 13 lbs
under tie bars (2) with bolts, 2.5 pounds
Spare Tire, Jack, and Tool 37lbs
Front strut tower brace 8 lbs
Oil cooler w/oil 7 lbs
wing 7 lbs
downpipe back exhaust 22 lbs
AC compressor, condenser, core and brackets 23 lbs
front speakers and head unit 7 lbs
rear speakers 8 lbs
rear crash beam 18 lbs
rear wiper 3 lbs
trunk plasic 7 lbs
Evap systme 9 lbs
washer boltle 6 lbs with half full fluid or 3 lbs without fluid
Floor mats 5 lbs
Front passenger seat 37 lbs
Rear seat bottom 9 lbs
Rear seat top 14 lbs
Carpet 17 lbs
Firewall sound padding 7 lbs
Seat belts 13 lbs
HVAC 17 lbs
The rest of the firewall sound deadening 7lbs
passenger air bag 9 lbs
AC fan 6 lbs
Dash metal 8 lbs
Front wiper assembly and motor 10 lbs
Bucket of left over bolts and screws 5 lbs
firewall padding 3 lbs
Oem clutch flywheel vs tilton twin carbon?
Small front brakes ? lbs
undertray ? lbs
stock weight ~ 3250 for my 05 EVO 8 GSR with sunroof. weight reduction so far 457 lbs so right around 2800lbs I'd guess.
To do list:
Interior Sound Deadening with dry ice? concerned it might leave an ugly mess
evap line fron under the hood to trunk area?
carbon fiber roof ? (loses 40bls on evos with sunroof)
carbon fiber trunk ?
Buschur light weight bits ?
Aluminum or carbon fiber driveshaft ?
Door crash beams 10lbs each (looks difficult and might need to wait for a roll cage for safety)
D2 coilovers 31 lbs less, weigh 34 lbs, (stock was 65 lbs)
15" Drag wheel/tire 54 lbs less, 33 lbs each or 132 total, (stock was 46.5lbs each or 186 total)
mini battery 27 lbs less
front crash beam 13 lbs
under tie bars (2) with bolts, 2.5 pounds
Spare Tire, Jack, and Tool 37lbs
Front strut tower brace 8 lbs
Oil cooler w/oil 7 lbs
wing 7 lbs
downpipe back exhaust 22 lbs
AC compressor, condenser, core and brackets 23 lbs
front speakers and head unit 7 lbs
rear speakers 8 lbs
rear crash beam 18 lbs
rear wiper 3 lbs
trunk plasic 7 lbs
Evap systme 9 lbs
washer boltle 6 lbs with half full fluid or 3 lbs without fluid
Floor mats 5 lbs
Front passenger seat 37 lbs
Rear seat bottom 9 lbs
Rear seat top 14 lbs
Carpet 17 lbs
Firewall sound padding 7 lbs
Seat belts 13 lbs
HVAC 17 lbs
The rest of the firewall sound deadening 7lbs
passenger air bag 9 lbs
AC fan 6 lbs
Dash metal 8 lbs
Front wiper assembly and motor 10 lbs
Bucket of left over bolts and screws 5 lbs
firewall padding 3 lbs
Oem clutch flywheel vs tilton twin carbon?
Small front brakes ? lbs
undertray ? lbs
stock weight ~ 3250 for my 05 EVO 8 GSR with sunroof. weight reduction so far 457 lbs so right around 2800lbs I'd guess.
To do list:
Interior Sound Deadening with dry ice? concerned it might leave an ugly mess
evap line fron under the hood to trunk area?
carbon fiber roof ? (loses 40bls on evos with sunroof)
carbon fiber trunk ?
Buschur light weight bits ?
Aluminum or carbon fiber driveshaft ?
Door crash beams 10lbs each (looks difficult and might need to wait for a roll cage for safety)
To do list:
Interior Sound Deadening with dry ice? concerned it might leave an ugly mess.
it wont. it is much cleaner then a scraper and hammer.
evap line fron under the hood to trunk area? 1.5lbs for the line
carbon fiber roof ? (loses 40bls on evos with sunroof) correct
carbon fiber trunk ? depends what you get. i run a fiber image. trunk weighs 6lbs
Buschur light weight bits ? for sure. i got them all. depends how nuts you go but your talking big savings here.
Aluminum or carbon fiber driveshaft ?will it be on the streets anymore? use AWD 2 piece if it will be on the roads. if not and only on the drag strip then use the carbon one.
Door crash beams 10lbs each (looks difficult and might need to wait for a roll cage for safety10lbs each no way. we dont know for sure but my guess is 20lbs MAX for all 4 doors.
Last edited by EvoDan2004; May 24, 2012 at 04:16 PM.
May 26, 2012, 05:26 AM
#1345
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I'm not too concerned about it being off a bit... it is what it is ya know. I could stand to lose 10-20lbs anyway Has anyone put down speak box carpet to replace the factory just so there's something in there? if so I'd like to see some pics. I thought about removing the insulation from the bottom of the factory carpet but it seems most of the weight if the rubber lining that's part of the carpet, not the insulation.
Has anyone put down speak box carpet to replace the factory just so there's something in there? if so I'd like to see some pics. I thought about removing the insulation from the bottom of the factory carpet but it seems most of the weight if the rubber lining that's part of the carpet, not the insulation.
May 26, 2012, 08:25 AM
#1346
I'm not too concerned about it being off a bit... it is what it is ya know. I could stand to lose 10-20lbs anyway Has anyone put down speak box carpet to replace the factory just so there's something in there? if so I'd like to see some pics. I thought about removing the insulation from the bottom of the factory carpet but it seems most of the weight if the rubber lining that's part of the carpet, not the insulation.
Has anyone put down speak box carpet to replace the factory just so there's something in there? if so I'd like to see some pics. I thought about removing the insulation from the bottom of the factory carpet but it seems most of the weight if the rubber lining that's part of the carpet, not the insulation.
May 26, 2012, 09:44 AM
#1349
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turns out it weighs about 18lbs with the padding, metal and wood...about 9lbs without that. I'm cool with that so it and the trim goes back in. The wood and metal pieces alone were 4lbs of it.
May 31, 2012, 12:02 PM
#1350
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Weight Reduction!
A lot of people have been asking the weight of Collin's stock replacement manifold. Below are pics of a PORTED & coated stock manifold on a scale & Collin's stock replacement...
A lot of people have been asking the weight of Collin's stock replacement manifold. Below are pics of a PORTED & coated stock manifold on a scale & Collin's stock replacement...