Extractor Manufacturing

[kiks]

Looking good. I would of expected much longer primaries and they look a little large in diametre.

The cats is where the power is. Change them stat.

[Tradewind]

Looking good. I would of expected much longer primaries and they look a little large in diametre.

The cats is where the power is. Change them stat.

Kiks

Your observation is good, length cannot change as we aim to be as near emissions compliant as possible, keeping cats in stock position is necessary but cat update as you rightly suggest is NEEDED, I can see at the top end of our dyno results that we are limited by cat flow and/or restrictions further down the system.

At moment sound levels out the back are unchanged and sound levels at front of car are fractionally more than stock but probably 90% less noise (coming through the metal)than i would normally see from adding headers - which is a major plus.


Yes the primary's are going to drop in size for NA cars, what we have here on car now is showing itself suited to the higher flows of forced induction but since there are gains lets make a dedicated NA set. tThe current set really work up the mid and top end power very nicely

[SH30RB]

Tim, if no other NA owner is interested, id be more than happy to purchase a set to see what gains can be made on the NA engine, as i have some high flow cats ready to go on and im interested to see what difference they make

[Tradewind]

SH30RB

I will make a set with smaller primary's for NA, once I have these done i will be very happy to sell you them. The size adjustment is necessary to keep torque on track at 3500rpm,

I will also run a set of these small tune headers for testing as well

I will take that as an order, that adds to another person who wants a basic set also. $660inc plus post

[SH30RB]

Cheers ill keep some money aside from mods, and when they are ready ill send some money your way.

[kleinerbastler]

I think the primaries are not longer have look at the one from the rotrex build

[SH30RB]

My Car
Before:201hp/253Nm (150Kw/186lb-ft)
After: 262Hp/306Nm (193Kw/225lb-ft)

I Wish´s car:
Before: 201Hp/249Nm (150Kw/183lb-ft)
After: 239Hp/303Nm (176Kw/223lb-ft)

The numbers are street dyno, i think not 100% detailed, but good enough to see the difference

kleinerbastler, are those figures kw at the wheels? and also is that with just exhaust, high flow cats and a tune? or with the SC kit too?

[kleinerbastler]

@SH30RB
this are the numbers at the wheels without sc - just exhaust and highflow cats. But remember these are street dynos, i don´t believe that my car has 300hp at the crank - but you see (and would feel) the difference.

@Tradewind
which diameter the header have at flange to the cat - looks awesome.

[Pundit]

Postage to Melbourne would be $___?

[SH30RB]

ooh wow! im really looking forward to the tune!

[Tradewind]

I estimate around $80 for postage AND packaging

[Tradewind]

I think the primaries are not longer have look at the one from the rotrex build

Ing

I also believe we have the primary length perfect compare to that image and to the "other" images we have to go by

That collecter is huge, I will pull it down to around 2" and drop pipe size down to 38mm OD from 44mm. A bit more velocity is needed for the early mid range

Remember - one side of this engine is only 1.5 liters worth, that pretty tiny , so sizes will be down on what you might see on a healthy commodore V6

[BJ]

I'm interested in a set for a NA engine too, I already have the high flow cats. I would have expected 38mm ID or about 41mm OD?

[Tradewind]

The new NA sets will be 1.5" primary - laser cutting new flanges to suit this today. I may also spec this for the SC as well.

[west_minist]

@SH30RB
this are the numbers at the wheels without sc - just exhaust and highflow cats. But remember these are street dynos, i don´t believe that my car has 300hp at the crank - but you see (and would feel) the difference.

@Tradewind
which diameter the header have at flange to the cat - looks awesome.

well if the road is flat and at least no down hill, you be good