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L-series header advice
Posted: Tue Aug 29, 2006 8:49 pm
by Alex
gday all
my 3inch liftkit is finally in!...we had some minor problems with the tailshaft rubbing on my exhaust, it just needs some cutting/re-welding etc etc...
to the question, im thinking of getting some catless headers and when they re-do my exhaust just get them to shove the new headers in...
is this a wise option? can i expect more power? fuel economy? any other pros/cons?
by the way...its a 1990 L-series sportswagon, and i currently have a 2.5inch cat-back sports exhaust
cheers
Alex
Posted: Tue Aug 29, 2006 9:04 pm
by waggaclint
ive got lukey headers on mine its not lifted but they are good it did make it go better and better on fuel to hey....id recomend putn em on hey....
Posted: Tue Aug 29, 2006 9:23 pm
by SuBaRiNo
I have heard mixed reports about the benefits of removing the Cat... some have said the power increase is noticable... similar to that noticed when air con is ON compared to air con OFF.
Some say it makes no difference and it is simply a polution control device. I on the other hand have never actually had one in any of my subies. EA81 never had em and my ej22 had no space for the Cat so it was removed.
Dave
Posted: Tue Aug 29, 2006 11:23 pm
by Suba
SuBaRiNo wrote: EA81 never had em
Dave
Some of them did Dave
.
Mike.
Posted: Wed Aug 30, 2006 10:24 am
by smoov
Don't know how strict its policed over your way, but make sure you realise the legalities, or lack of, by not running a cat.
legalities aside, i ran catless headers when I had my L. It made a difference. Difference to power (having said that, my headers were shot anyways, with leaking flanges.) It'll make a difference to your wallet. $200 vs $700 for catless vs catted headers.
I would do the exhaust. makes for a good grounds for power increase.
you said that you had 2.5"? I think that's an excessive size for a 1.8. You would even get a better power increase if you were to drop to 2", some would say 2.25". This is because the motor does require some backpressure, for improved combustion.
Posted: Wed Aug 30, 2006 10:30 pm
by Subafury
smoov wrote:you said that you had 2.5"? I think that's an excessive size for a 1.8. You would even get a better power increase if you were to drop to 2", some would say 2.25".
He's thinking ahead smoov, the exhaust is all ready for a turbo to be bolted on!
