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Which brand of extractors are best for a standerd 186 red engine in a HG kingswood.

GENIE EXTRACTORS
20% (10 votes)
PACEMAKER EXTRACTORS
60% (30 votes)
REDLINE EXTRACTORS
2% (1 vote)
Or other, please specify?
18% (9 votes)
Total votes: 50
Model: 
Engine: 
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Comments

As long as the pipes are all equal length. None of this long pipe/short pipe nonsense! My brother and I both had Genie 'strax, his were single outlet and mine were split and the six primary pipes before they joined the two secondary pipes were all 24 inches long. I don't know if it made much difference to the performance but you could definitely hear all the pipes start to make a hard buzz together at about 4000rpm. It wasn't that splattery roar you get with odd length pipes. May as well have it sound right if nothing else!
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I disagree!
Whilst 'tuned length' are good for a highly modded motor, they just aren't much chop for a what 'new fella to...' has: "standerd 186" (sic).

'Interference' headers/extractors don't look as pretty, or sound quite as musicial, or produce as much peak power, but they DO help a stock motor quite a lot.
According to my repair manual, that era of 186 develops max power (!) at 4400rpm (?). Since he's just cruising, he'll rarely be topping 3500-4000. Interference pipes give a torque increase and a power increase and its all happening in the range that he needs - from about 1500 to 4500.
Granted, above that, they don't generally add even more output.

In a totally unrelated link (heh heh!) - I happen to have a set of Red 6 extractors for sale.
They're Lukey brand, interference type, and in 'near new' condition.

$100.

Who wants 'em?

HKing of Bris.

'i'm definately shore that guage wont work with my tuff bango diff and Opal sydcrome box,if it goes though my grill,and I put the breaks on I realize its better with the glimer belt & tunned holly and Ederbrock duel feul webber gaurds, wiht etc primmer.'

Sure. I should have said that if they were interference type then the 3 short pipes before they meet should ideally be all the same length too. Or at least not radically different like you used to see with el-cheapo extractors with the very end cyls having a long pipe each.
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Well said.

Although I have ran a set of Genie Tri-Y on my 308 for years, next time around I would go with Pacemaker, as they have much better pipework.

for myself, the "best" type was whatever the ones I have now are - "best" because they cost me $60 at the local wreckers!

pacemakers i swear by them and will recommend them.
no also be honest as even when im crusing i still do 3000-6500 through 1-3 hehehehe so peak power will come into play but if u really do drive like a hippy and putt putt every when then no and will extractor really benifit anyway? or just a waiste of money?

long live the hemi powered holdens

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Of course it benefits! Better sound! And besides, the power/torque increase would make the car a bit better/more fun through town. Now just add 30/70 cam and then theres one sweet sounding motor, thats really flexible and good around town (although not quite as smooth as a stocker) :)

Cheers,
Nate

Postcode 2450
'64 EH Special - '82 Series 1 Bluebird GX - Series 2 Bluebird TRX rally project
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I think that a set of X2 headers will actually give the best note & be beneficial to your engine, they sound much better than any extractors on a red six.

dave
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Aly opinion on how long the two pipes should be before they join? I'm pretty sure late 60's /early 70's Toyota Crowns for example had two separate pipes all the way to the inlet of the rear muffler. Some Mercedes Benz's had the same. Made a refined sort of buzz when you gave it a bootfull.
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X2 or 186s headers.Even some of the speedwcy boys track em% down instead of extractors..so they cal't be to bad :)
Q-ball,

"Clay is for racing on, Tar is how you gev there!!"

Q-ball.

"Clay is for racing on,Tar is how you get there!!"
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3401

Settle down guys...you are talking sense here! :-))

186S/X2/GTR/GTR-XU1 headers are the mainstay of THE best sounding Holden 6 cylinder exhausts.

For Circ: On the Torries (and I assume the larger cars), the twin engine pipes joined into one just under/behind the bottom of the firewall, so about where a set of extractors ends.

Cheers...Dave

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Cheers...Dave

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MAKE NO MISTAKE pacemaker have the best pipes out there as they bend them without mistakes produce equal length tuned set ups and unleash mountains of torque and power in a 253 anyway I would never buy tri-y only 4 into 1 tuned pacemaker

don't bother with extractors.. go with x2 or xu1 headers, they outflow extractors (outscavenge) unless u have spent megga dollars porting your head. and you can change your starter motor without pulling the manifolds off. the extractors need to be heat tape wrapped or they cook the starter motor solenoid.

I agree kermit-green-LC. The X2 cast headers flow better than extractors. I once ran an LX with them on, 2 inch split system with turbo mufflers. The best sounding holden six I've ever heard, and it went hard too!
Cheers . Jeff

OK so the consensus seems to be that headers are the go... Is there such a thing as "headers" for a blue / black cylinder head?

Sorry Pinky, no...only tubular extractors AFAIK.

I still owe you an E-mail...been run off my feet lately...I will get to it mate :-))

Cheers...Dave

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Cheers...Dave

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The last time I looked, blue motors came =standard= with a 2-piece exhaust manifold. They do have an opening on the top of each to feed heat into the underside of a VaraJet inlet manifold so you would have to block them off if you used some other kind of carb and inlet manifold setup.
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The blues and the blacks do come with a two outlet setup similar to the X2, but as one piece not two separate pieces feeding to the secondaries. The design is almost identical. Don’t know if they would fit on a red.

There are advantages to cast, when they have been port matched and fitted to a mildly modified engine.

Cooler engine bay
Less noise
Last longer
Don’t come loose as much as the tube headers/inlet manifold mix
Can change the starter motor easily
Don’t cook the starter motor

I had extractors fitted and went back to cast manifold with some mods

As for secondary lengths after the cast primaries finish as per Circlotrons post, I think the longer they are the more torque you get. It’s a mix of length and width, but it is very tuneable.

Don’t write them off because they aren’t cool. Lots of factory cars come out with good cast setups, and with extractors all you get is extra noise and the illusion noise = power

These are great on a red 6 to a point !!! But will not let a engine produce its full potential . I ve seen 20 to 30 hp at wheels difference with a good mandrel set of extractors. Spent a lot of dollars on flow benches and dynos to get a red screaming . I ve tested tons of stuff and their is alot of un tapped power to be made with the right combo.

Used to be a company in Doncaster (Melbourne). HM Headers were the best you could get....... combine them with a 12 port head on a 40tho over 186 (192) and pipe them out the side thru a hotdog........ NOTHING matches that in HP or melody!

I have genie extractors on my186 and it keeps on blowing gaskets that can i do

you need to remove them and have a look and see evidence of the leak.

hopefully you have the 2 end "pins" removed and replaced with 3/8unc bolts.

sometimes the extractor flanges are too long, they can foul the top of the block not allowing any gasket crush.

sometimes the manifold retaining washers are not clamping on the exhaust as much as the inlet. you can use nails at a pinch or ideally weld a bead where required to increase clamp on the exhaust flange. the washer needs to be relatively flat

other times the extractors can be just warped along the flange - i grind a few extractors and manifolds for other shops at my work, most of the worst ones are turbo exhaust manifolds from ebay, its like they weld them and never even check theyre still flat, worst i rectified was 3mm low in the middle!!

worst case the manifold face on the head can be bad, i machine this on every holden head i reco but its very unusual that a gasket couldnt take any imperfections up here.

Have recently bought a set of 'Motorvator' extractors in good condition for my 186/powerglide HT Prem ... can't say that I've heard of them ... does anyone know anything regarding this brand? Cheers Rod