Daves cat back ,vibration problem ,need advise

[thechomper]

right lads installed this at the weekend and having a few problems,with vibration and the odd banging,i have replace the back box bushings with polyureteane ,which has improved it a fair bit

i am planning and also replacing the middle ones ,as i think it will help

now were the main vibration is coming from is ,the middle part of the exhaust were it is hitting this gaurd ,can i remove the gaurd ,or is it there for a reason,this is were the vibration is coming from

also it is sounding as if the backbox is rubbing off the odd bad bump,but it dos'nt look scratched and i think the knock is somewere else.picture ,height of the lowest point to the ground is 4 and a half inchs ,now the suspension islowered to the deck,what ye reckon

 

[kieran.s gt]

you could bend the gaurd away from the exhaust pipe that should sort that

 

[WallaceGlanza]

On the bumps the rear axle will be coming up and hitting the bit of pipe going over it, mine does this on large bumps.

 

[thechomper]

problem with photobucket ,just give me a minute to resize

 

[thechomper]

you could bend the gaurd away from the exhaust pipe that should sort that

i say it would be best to remove it ,what is the gaurd there for

 

[kieran.s gt]

i say it would be best to remove it ,what is the gaurd there for

quite safe to remove imo

 

[thechomper]

On the bumps the rear axle will be coming up and hitting the bit of pipe going over it, mine does this on large bumps.

is yours one of Daves or a blitz one ,now one thing i say the exhaust is top notch and i would recommend to anyone ,just with Dave been on holidays ,and can't get in touch,top class trader ,just looking for suggestions to sort it,as it's doing my head in ,halfords only had 2 polyuretane bushings ,so ill have to wait till the weekend ,to do the middle ones

 

[kieran.s gt]

is yours one of Daves or a blitz one ,now one thing i say the exhaust is top notch and i would recommend to anyone ,just with Dave been on holidays ,and can't get in touch,top class trader ,just looking for suggestions to sort it,as it's doing my head in ,halfords only had 2 polyuretane bushings ,so ill have to wait till the weekend ,to do the middle ones

polyuretane bushings should help it alot

 

[Aidan-G]

shouldnt need to replace the middle rubbers
no harm to bend that metal bit too
maybe try to bend the hanger at the backbox so it sits a bit higher..it must be sitting really low at the minute!

 

[toyobaz]

i say it would be best to remove it ,what is the gaurd there for

its the heat guard for the petrol tank, if you remove it its best to heat wrap the exhaust to stop it warming the petrol up, cool fuel is always best

 

[WallaceGlanza]

is yours one of Daves or a blitz one ,now one thing i say the exhaust is top notch and i would recommend to anyone ,just with Dave been on holidays ,and can't get in touch,top class trader ,just looking for suggestions to sort it,as it's doing my head in ,halfords only had 2 polyuretane bushings ,so ill have to wait till the weekend ,to do the middle ones

Mine's a custom job,I had it fitted before the coilovers then needed it adjusted a lot once lowered. There's not a lot of room over the rear axle when there's a big 2.5inch pipe running over it.

 

[thechomper]

the gaurd is not metal ,but more a plastic material,so dont think i can bend it,the clearence seems fine ,but the backbox only has a few scrapes ,so i think that is were it must be touching ,when i'm getting the banging noise,would it be major if i removed the gaurd,and does 4 and half inches sound ok for clearence of the backbox

 

[Jay]

you could bend the gaurd away from the exhaust pipe that should sort that

Ten minutes spent doing this might save you a whole lot of headscratching mate.

Give it a go!

 

[thechomper]

Ten minutes spent doing this might save you a whole lot of headscratching mate.

Give it a go!

well mate if thats your advise ,i'll definitly give it a go,do you reckon the banging is the axle hitting part of the exhaust,rather then the back box rubbing,and should i try avoid removing that gaurd

 

[Rory]

I will garantee, that the axle will be hitting the exhaust pipe. Car is possibly a tad bit to low.

I persobnally would not remove the petrol tank gaurds, give them a bend about, and see how you get on. As Jay pointed out, free and easy.

 

[thechomper]

I will garantee, that the axle will be hitting the exhaust pipe. Car is possibly a tad bit to low.

I persobnally would not remove the petrol tank gaurds, give them a bend about, and see how you get on. As Jay pointed out, free and easy.

cheers mate ,give it a go tomarrow,yes the car is slammed to the deck,could'nt go any lower

 

[Rory]

Un-Slam it a wee bit, and see how it goes.
Going from the avatar pic, its well down!

 

[dac69er]

exhaust knocking is really hard to stop even on the best exhausts. if lowered it make things worse.

ive only got a 2" pipe over the rear axle and that still knocks on big bumps!

 

[thechomper]

Un-Slam it a wee bit, and see how it goes.
Going from the avatar pic, its well down!

its slammed to the deck on lowering springs (previous owner ),coilovers will come when the credit card is sorted ,but that will be at least 4 months

 

[streetracer_starlet]

Yep, hitting the rear axle.Had it on the GT and now the sleeper. 2.5" and lowered = no space