Turbo Bag Or Heat Shield

[BOZ22N]

cheers mate for the support, ive been reading on the net in general about the turbo bags and especially on the aus rx7 forums they have about 5 of them saying they have had manifolds cracking within 6 months and other probs, etc and thats shop owners saying that not just normal users. they all highly reccomend to keep the heat off everything else by using metal shields on the bits u want cool, not on the turbo itself.

interesting reading on some other forums...

cheers

Brad

now thats thinkin, good luck and pls keep us posted on you results as i am soon to be in the same boat.

cheers,

ryan

[INASNT]

cheers mate for the support, ive been reading on the net in general about the turbo bags and especially on the aus rx7 forums they have about 5 of them saying they have had manifolds cracking within 6 months and other probs, etc and thats shop owners saying that not just normal users. they all highly reccomend to keep the heat off everything else by using metal shields on the bits u want cool, not on the turbo itself.

interesting reading on some other forums...

cheers

Brad

Meh rotors, look at them the wrong way and they break

I have had no trouble with mine in 3 years of use, with track work also.

[Roy]

Meh rotors, look at them the wrong way and they break

I have had no trouble with mine in 3 years of use, with track work also.

Yeh, thats a good point...but you dont drive your car that aften do you...woudlnt it be lucky to do 500kms a month? So just tryign to get as better idea of how many kms / heat cyles yours has seen.

I doubt it really matters, but your car isnt exactly a 500-800km pre week car

[SirSkyline]

Ive got a new high mount and turbo etc etc. And I decided to get a new bonnet made up for heat reasons. So I bought a second SII skyline bonnet and I'm putting the Ford BA lump in the middle of it (Yes I said Ford) but at the front I'm going to have it sit up by 25mm so I have a scoop at the front and then divert it over to the turbo some how (I haven't worked that one out just yet) and at the rear have it sit up by 30mm across the back to get rid of the hot air. Ill post some pics up when I have it fiberglassed on there to give you an idea.

[INASNT]

Yeh, thats a good point...but you dont drive your car that aften do you...woudlnt it be lucky to do 500kms a month? So just tryign to get as better idea of how many kms / heat cyles yours has seen.

I doubt it really matters, but your car isnt exactly a 500-800km pre week car

Used to drive it to work everyday from narre to hawthorn, but thats in peak hour traffic and there is no where really to give it some on the way to and from work.

In the last few months the car is lucky if it even gets started once a week

[markimak]

interesting. well im struggling to keep heat off my AFM's as they screw up when they r heated up. working so far. am gonna raise bonnet tomorrow. will post pics when i find a camera. cheers.

[lwells]

on the aus rx7 forums they have about 5 of them saying they have had manifolds cracking within 6 months and other probs

Not to be argumentative, but are we talking stock manifolds or aftermarket? I'm sure we've all heard of the issues with those Ebay manifolds cracking... Also, do you know where on the manifold the cracking occurs?

[CruiseLiner]

Not to be argumentative, but are we talking stock manifolds or aftermarket? I'm sure we've all heard of the issues with those Ebay manifolds cracking... Also, do you know where on the manifold the cracking occurs?

this is the link to the thread, has some good interesting points.. worth a read

aus rotor forums turbo bag discussion

[rev210]

I had a rotor period in my life back in the day and I used exhaust tape back then without issue (I used it correctly). However even back then my own brother wrapped his headers on his 13B bidgeport in his usual haphazard way and had them crack to bits in less than 6 months. I rewrapped a new set of headers for him and they never cracked again. Even after years of hard use when the car was sold the headers were actually in good nick. The real reason is more often due to over rich mixtures up the top end , rotors have very low tollerence to pinging and so tuners can run the peak very rich (mostly the carbie boys are guilty here) and this will wear out headers with or without tape. The old solution was to use very thick guage steam pipe tubing.

NASCAR teams have used the stuff for years, even in that arena there are scaremongering HPC coating companies that try to make out that the header wear on those cars is due to thermo tape when its actually the unburnt fuel going through them and combusting inside that does it.

Think about the rally cars and the antilag feature they use, that definately does wear things out real fast. This is also true of diesel turbos or even headers where the mixtures are set way too rich in an easy chase for greater power. The late burn thorugh the exhaust valve pushes the egt through the roof. At the very top end race teams don't really care too much if the headers or turbos need replacement every few meets.

So it's really more of a warning about antilag and afterburn. Thermo wrap is fine and good.

[S3_Girl]

Rotaries have MUCH higher exhaust gas temps then

a piston motor, so looking on that forum is not going to

help you:)

cheers

darren