Hi all , I keep hearing that XT EA82T headers are different to L Series ones .

Ages ago I removed one from an early 3 plug ECU FWD car so it must have been an 85 or 86 build car .

 

I roughly measured the outlet holes and I think the turbo outlet is ~ 40mm and the turbo side head about the same .

The other heads pipe knecks down as it goes through its radiused bend but not sure how small - possibly 30 odd mm ?

 

Can someone tell me how to ID the XT4 one and confirm if it is made of steel or stainless steel .

The other thing is has anyone tested the two headers back to back and if so what was the difference .

 

My car is an Australian spec 86 RX Turbo sedan though it does have a spider manifold fitted . Long story short , adapter plate welded to spider plenum to take the std 3 plug throttlebody and TPS .

We have a rebuilt and slightly warmed up 87 Aust spec XT4 AWD turbo engine going in soon and a properly made header is on the cards but initially it may need to run a std header , just want to run the better factory one if there is a difference .

 

Cheers Adrian in Australia .

i wasn't aware of any material (in the law sense) differences between those headers. the only differences I would have thought existed were based on just the throttle body set up - being a few different EA variations and spider intake verses non-spider intake. that's the only difference i thought there was.

 

and from the ones i've owned I can promise they definitely are not stainless steel - they rust like any other EA soob - swiss cheese baby!!