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Old 12-17-2011, 01:52 AM   #1
pointblink19
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Default EWG and Axle boot problems

Hey guys i just installed my ewg setup and i'm ready for a tune this sunday but i was just talking to a local mechanic and he said that the shop ran the ewg with dump tube which runs really close to the axle boot and they experienced problems with the axel boot melting or cracking.

I'm gonna be using the car as a DD and i'll get on it a few time when cruising with my buddies but is there some people out there that have experienced problems? I'd really like to maintain this car and i'd hate to get rid of the ewg setup as i just put it in.

let me know what you guys think.
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Old 12-17-2011, 03:03 AM   #2
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Heat wrap the dump and make sure the exit is below all the important stuff.
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Old 12-17-2011, 04:11 AM   #3
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i heat wrapped and temp coated the dump tube. but there is no way the exit can be below the axle boot; it is right over the top of the axle boot;

but i figured since heat rises, the heat wouldn't be going down as much?

i'll try to snap a pic to show what i mean
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Old 12-17-2011, 02:23 PM   #4
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it is not a problem unless the dump tube is routed so that the exhaust exits directly on the axle. just make sure it's not and it'll be fine. I've had mine running for the last 6 months with no problems.
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Old 12-17-2011, 02:42 PM   #5
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Its hard to tell you precisely what to do without really knowing how close it is to the boot and where it actually dumps the excess exhaust gasses. However, you can never be too careful... You can always welt on a small extension pipe to it IF it vents on top or in front of the boot and wrap it IF it sits to close to the boot on either side. That's what I would do.
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Old 12-17-2011, 09:59 PM   #6
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it vents parallel to the axle boot but no actual exhaust gas is directed on the boot; i'll try to get a pic up tomorrow in the light.
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Old 12-17-2011, 11:08 PM   #7
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worst case make a new dump tube. 100 bucks maybe.
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Old 12-17-2011, 11:30 PM   #8
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Quote:
Originally Posted by littlewhitewagon View Post
Heat wrap the dump and make sure the exit is below all the important stuff.
Quote:
Originally Posted by kenliu84 View Post
it is not a problem unless the dump tube is routed so that the exhaust exits directly on the axle. just make sure it's not and it'll be fine. I've had mine running for the last 6 months with no problems.
I've got my dump tube heat wrapped and ceramic coated, and I haven't had any issues with mine yet. It dumps just below the axle, and it past it. Granted, during normal/moderate driving the dump tube isn't seeing any action, running a 21 psi spring.

This is how close it gets to my axle boot:
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Old 12-18-2011, 02:05 AM   #9
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I had my ewg setup all custom made because I have the maddad setup. So far my dumptube is fine imma look at it next week to make sure. I heat wrapped my dumptube just incase it leaned against the lines or axle boot but as long as the dump exit isn't right on or above your boot don't worry about it.
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Old 12-18-2011, 09:48 AM   #10
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I had to make an extension on the dump tube, at the track the high speed air going under the car directed the hot exhaust to the gearbox mounts and melted them. Not a nice sight with dripping molten mess.
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Old 12-18-2011, 10:28 AM   #11
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Quote:
Originally Posted by pointblink19 View Post
Hey guys i just installed my ewg setup




he said that the shop ran the ewg with dump tube



let me know what you guys think.


so who actually installed it? As long as teh dump isnt hitting the axle dont sweat it.. nothing will melt
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Old 12-18-2011, 10:14 PM   #12
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i put it on my self; it isnt on the axle boot, but its right above dumping behind it i dont think any gas should be sprayed directly on it.

but i've run into another problem; there's a sensor or wire sticking out of the transmission that i see is starting to melt from the tune i had today

any ideas on what i should do to cover it or protect it besides extending the dump tube?
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Old 12-18-2011, 10:27 PM   #13
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21 psi spring? hell my 14.5psi spring is hard to open at first and WGDC is dropped almost all the way to zero. what turbo you going to run that you need that much holding pressure and that much boost at redline?
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Old 12-18-2011, 10:31 PM   #14
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Quote:
Originally Posted by WhyHelloOfficer View Post
I've got my dump tube heat wrapped and ceramic coated, and I haven't had any issues with mine yet. It dumps just below the axle, and it past it. Granted, during normal/moderate driving the dump tube isn't seeing any action, running a 21 psi spring.

This is how close it gets to my axle boot:
Mine has been like this for 3 years.
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Old 12-19-2011, 02:45 AM   #15
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so is the dump tube pointing at the ground?

anyone have the grim speed dump tube? i dont think it will point down just towards the rear of the car
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Old 12-19-2011, 09:03 AM   #16
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This is how the GrimmSpeed dump tube sits, and many people run it without any issues.

Quote:
Originally Posted by xluben View Post




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Old 12-19-2011, 10:18 AM   #17
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just heat wrap it and if you start to notice a problem just extend the pipe with an angle facing away from everything or have a new one made. you can buy the pipe and angles from any auto store and use band clamps to hold it all together so you dont damage the dump tube. the extension pipe and angles just slip on.
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Old 12-20-2011, 12:32 AM   #18
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kk i'm going to try and fiddle around with it tomorrow and if not i'll just go to pepboys can get a pipe to clamp on; can yu post a picture of the clamps? im not sure what to get
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Old 12-20-2011, 02:20 AM   #19
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As they say... "Don't run with scissors..."

If you do, most likely you will not stab yourself in the face but if you do, it will suck.
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Old 12-20-2011, 03:42 AM   #20
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Only on 8 months running complete gs mani /xpipe...ina addition to last tune we added the gs 38mm ewg, all coated & wrapped,,_ dump tube is flared out too, protecting cv plasti-boot by a few cm. well planned imo....
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Old 12-20-2011, 08:53 AM   #21
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Quote:
Originally Posted by pointblink19 View Post
kk i'm going to try and fiddle around with it tomorrow and if not i'll just go to pepboys can get a pipe to clamp on; can yu post a picture of the clamps? im not sure what to get
this is just a quick search with a picture for you. they do make them in the size you need but you will have to search around abit.

http://www.jegs.com/i/Dynomax/289/33228/10002/-1?CT=999

if you can not find this style in the size you need then just use a regular crush clamp. make a few small notches/cuts on the end of the pipe that is going to slip over the dump tube if you go this route though. this is just so you dont have to crank down on the clamp as much and should not cause damage to the dump either if you do it right. plus it wont fall off..

hope that helps some, its hard to explain myself over the computer sometimes.
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Old 12-20-2011, 09:28 PM   #22
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kk so i had to get an extended pipe with a clamp due to the fact i have a erz catted downpipe and when i went to fix the dumptube it would be pinned next to the downpipe leaving me unable to mount it back on.

went to pepboys and got along 45 degree exhaust extension and had it bent to about 65 degrees then cut it to a good length, coated it with high temperature heat spray from thermotech and clamped it on the dump tube. the only issue that concerns me is the clamp is about a mm away from the transmission.

i shouldn't have a problem tho bc the uppipe nor wg should flex right?
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Old 12-22-2011, 12:23 AM   #23
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bumpp?
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Old 12-22-2011, 08:42 AM   #24
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Quote:
Originally Posted by pointblink19 View Post
kk so i had to get an extended pipe with a clamp due to the fact i have a erz catted downpipe and when i went to fix the dumptube it would be pinned next to the downpipe leaving me unable to mount it back on.

went to pepboys and got along 45 degree exhaust extension and had it bent to about 65 degrees then cut it to a good length, coated it with high temperature heat spray from thermotech and clamped it on the dump tube. the only issue that concerns me is the clamp is about a mm away from the transmission.

i shouldn't have a problem tho bc the uppipe nor wg should flex right?
i wouldnt think the pipe would flex, but there is a chance it will move some. think that the engine does move, but so does the transmission. if you think it will be a problem get some thermotec heat wrap and wrap the entire dump. around the clamp and all. but i dont think you will have an issue with it IMO

you could always have a bracket welded to it if your really that worried about it also. but i think thats just going over board with the whole thing. just drive it around and see if it makes noise or is affecting anything.
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Old 12-22-2011, 03:58 PM   #25
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ok well as of now its not making any noise that i can notice; i'll probably end up heat wrapping the whole thing if i can't find a cobb catted dp where the cat is towards the end of the pipe.

one thing i do notice tho is a smell of some sort of gas, not sure if thats because of the fumes coming out of the wastegate or not. It could also be the pb blaster i sprayed before burning off so i'll wait a few days and see if that smell goes away.

edit*

one last thing also i was curious as to if anyone hears a "gargle" sound when they start to hit the throttle from the wastegate, i was tuned by sti mikey this weekend and he said its an exhaust leak, i've put in brand new grimmspeed gaskets in the uppipe but im also going to replace the turbo to the dp and see if that solves my problem but i'm pretty sure the sound comes out of the dump tube. I know that the wg only opens in boost so i initially first thought that the springs werent strong enough but i have a 1 bar spring in there on a vf43 which is more than enough.

any thoughts guys?
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