Whilst flowing my headers today, i also did a run on the exhaust ports. Took away alot of material and worked inward about 3 cm.

I'm very pleased with the result, i gained a lot of tourqe in low and middle rpm:s and slightly better at top. The driveability wich was already with TeK2 a dream is even better now.

Along this, the burbly headpounding sound is almost gone, much less struggling. I'm very pleased indeed.

Boost raised almost 1 PSI also.

-Christer

Did you just do the heads in situ ? How did you ensure the shavings didn't go where they shouldn't ?

Andy

Watch out you may be running lean. Might be worth a Delta Dash or select monitor check.

I made 4 fluffy balls of wool, wrapped i cotton, and pushed them gently in towards the valve-shafts. I did not get anything above those. Really simple and definately worth it!!

-Christer

Sounds good :) Did you go right out to the gasket diameter ? Reason I ask is that I've no idea how close the cooling jacket is and would not want to cut into it :eek:
Did you notice any difference in the RPM the turbo hits full boost at ? Mine is spooling much earlier but I modified the intake at the same time so I'm not sure which one made the difference :rolleyes:

seems like everyone is doing it this week ;)

did mine over the last couple of days, i got it ported to the gasket diameters, i've got some photos of before and soon to be after (just needs a final polish :)) i'll post them soon


not had the chance to check any performance gains due to lack of gearbox on the car :rolleyes:


kev :)

what did you find was the best way to get the final polish, not started mine yet due to the rain :rolleyes: you might save me sometime ;)


kev :)

I started off the gross work with coromant bits and the grinder,
it was like shaving butter :)
Finnished it off with..hmm what do you call it in english...
those small rubber drums you can put different grades of polishpaper-tubes on...HEHE...sorry guys...swedish :/
also with the grinder.

i think i understand ;) do you mean emerycloth/sandpaper?


kev :)

yep.

John...yep, i'll log it. I talked to David some time ago, he said they had a better TeK upgrade for me when i've done the heads and headers, so i'll just send my logs and upgrade.

Edit: worth mentioning, i always run a 102RoN mixture

-Christer

[Edited by Evildead - 6/8/2002 10:59:26 PM]

I ported almost to the gaskets, 1mm left around.
It spools quicker now, haven't noticed exactly, but around 2 -2100
with a lot of bottom tourqe before that also

Some of the pics here:
http://plissken.fatalunity.com/gallery/misc/flowed/

[Edited by Evildead - 6/9/2002 6:07:28 PM]