hm headers/extractors

[ashzv6]

hi.
does anyone know anything about hm headers/extractors?

is pacemaker the best brand?

would a set of hm headers be worth it?
they have a 10 year warranty

thanks

[Doctor Sodways]

There is nothing wrong with HM, HSV used them on some of their cars. Pacemaker and Genie are made by the same company, pacemaker in SA, Genie in QLD i think. It comes down to personal preference, Pacemaker have built up a large client base, and do produce some very good products, as do HM though.

[greenfoam]

Advance look to make some fancy headers too, at least they seem so in the pictures I've seen

[pandaman]

Didn't HM make the tube type headers for the VN S1 V8's? Anyway, haven't heard anything bad about their gear, if it's the right price I say go for it.

[hakhawk]

HM usually give more power across the whole rpm range, where as pacemakers are more for higher rpm and give nothing or less down low.

[pandaman]

HM usually give more power across the whole rpm range, where as pacemakers are more for higher rpm and give nothing or less down low.

I dunno, pacemaker tri-Y's are supposed to give a pretty much across the board increase. The 4-1's are only top end though, just like any brand.

[greenfoam]

You might be suprised about that, 4-1 difilippos on the 304 give way more torque down low than the pacemakers, it makes total sense if you think about it, but we are talking about V6's here.

Yep HM made the tube headers on the VN and all the high end HSV stuff

[pandaman]

You might be suprised about that, 4-1 difilippos on the 304 give way more torque down low than the pacemakers, it makes total sense if you think about it, but we are talking about V6's here.

Yep HM made the tube headers on the VN and all the high end HSV stuff

yeah right V6, hmm, narrows down the options a bit, 3-1 or..... 3-1. I still reckon HM would do fine as long as he isn't looking for maximum ponies and the price is right. Difilippo is all well and good if you've got the dosh to shell out, but lets face it, most of us don't. That said, it's what I'm saving towards, I'll probably end up with a set of second hand pacies though.

[1991_Vn2nV]

Ok HM is not cheap, they are expensive.

Pacemakers are a much better product. The actual finish and workmanship on Pacemakers are ALOT better than the HM gear, and HM gear is quite shabby.

Di Filippo are great, but their V6 headers are massive. 2.5" outlets, 1.75" primaries. These headers are far too big for anything but a very very heavily worked V6.

Pacemaker headers are the best option. The bandyness of Pacemakers is exaggerated and pacemakers will give more max power.

[greenfoam]

Keep saving for those flippos I know of a VR statesman with 3.9 gears that ran a 14.5 with only flippos and a front mount bumper style CAI, and a dual exhaust. Unsure if it's got a tune but it's a safe bet to say it at least has advanced timing. Still 14.5 in a tank like that, you can't complain

[greenfoam]

Ok HM is not cheap, they are expensive.

Pacemakers are a much better product. The actual finish and workmanship on Pacemakers are ALOT better than the HM gear, and HM gear is quite shabby.

Di Filippo are great, but their V6 headers are massive. 2.5" outlets, 1.75" primaries. These headers are far too big for anything but a very very heavily worked V6.

Pacemaker headers are the best option. The bandyness of Pacemakers is exaggerated and pacemakers will give more max power.

I didn't even know you could get V6 difilippos imagine that

[pandaman]

Keep saving for those flippos I know of a VR statesman with 3.9 gears that ran a 14.5 with only flippos and a front mount bumper style CAI, and a dual exhaust. Unsure if it's got a tune but it's a safe bet to say it at least has advanced timing. Still 14.5 in a tank like that, you can't complain

Damn straight, might have to wait a year till I'm outta uni though, I'm trying to keep the car looking and sounding like it's not worth stealing while I'm parking it around civic.

[pandaman]

I didn't even know you could get V6 difilippos imagine that

They don't list them on their website, but it looks like they'd do custom headers to just about any spec anyone ever wanted. I like that attitude.

[ashzv6]

cheers for the replys.

hm v6 headers are about $450 not fitted including pipe going to the cat.

pacemakers comps are about the same price not fitted,

but im unsure if pacemakers include the y pipe that goes to the cat.

1 of the main reasons i want extractors is because i have a leak and cracks in the y pipe going to the cat on my car.

do pacemakers include the y pipe on the competiton extractors? 5029

or do the regular manual pacemakers extractors come with the y pipe? 5019

i would rather have pacemakers but if i cant get a new y pipe i might have to get hm headers

[blaze]

Pacemaker headers are the best option. The bandyness of Pacemakers is exaggerated and pacemakers will give more max power.

if u actually read up on HM extractors they are made right and tuned for our commodore engines, they giv of a tad bit more power like 3- 4kw and sound alot better. Im getting HMs in the next coupla weeks, yes at 700 odd dollars there not cheap.. i think most people with paceys will prob tell u to get paceys

[1991_Vn2nV]

if u actually read up on HM extractors they are made right and tuned for our commodore engines, they giv of a tad bit more power like 3- 4kw and sound alot better. Im getting HMs in the next coupla weeks, yes at 700 odd dollars there not cheap.. i think most people with paceys will prob tell u to get paceys

Mate pop into an exhaust store with a dyno. Request dyno figures. Pacemakers will give a higher MAX power, HM's will give a broader range.. But its not as bigger difference in the range as some people will tell you or advise.

And HM's are a poorer quality product than Pacemaker, again ask any exhaust store, and take a look at your own set when you get them.

All headers are tuned for engines mate. The pacemakers arent headers tuned for Nissan engines you know... They too are tuned for our Commodore engines, as thats what they are designed for.

[RVN 355]

Its a much of a muchness, Lukey,Pacemaker,Di Flillpo,Genie,Wild Cat,HM Headers,Hurricane i am sure they all have there good & bad Points.

Search around,get some quotes,ask some questions @ several Exhaust Shops.I ran Lukey on my 3.8L Calais and nothing wrong,my mate had Pacemaker went well,so I would say it would basically be the cost factor,as each brand has good reputations.

Pacemaker Made in S.A so they would be easier to source in Adelaide.

H.M Headers

www.hmheaders.com.au
HM77SS

RRP $535.41 (inc GST)

10 Year Warranty - 3.8 litre - This header bolts directly to the standard catalytic converter position and will require at least 2 hours to fit.This header is compatible with O.E. catalytic converters. Gaskets are not required for the header.

Lukey Exhaust

www.lukey.com.au

A new Lukey Performance Header will increase the power of your car by 10% to 25% by reducing back pressure and promoting fast, efficient extraction of exhaust gases.

Manufactured from 1.6mm and 2.0mm Mild Steel, Lukey Performance Headers are an interference-type design aimed at giving performance increase over a wide range of driving conditions. Some designs available in 409 stainless steel.
Finished in a high temperature black coating, rated at over 700 degrees Celsius.
Laser cut flanges ensure perfect fitment with no heat warping.
3-year warranty (excluding fitment to LPG vehicles or when using thermal wrapping).


Genie Headers

VN- VR Model: 218E
VN - VR Model: 218SS

1 5/8" Primarys, 2 1/2" outlet Flange

Wildcat Headers

VN - VR Model: 32
VN - VR Model: 32 SS

Pacemaker Headers

www.pacemaker.com

PH 5009
COMMODORE VN-VP-VR 3.8 LITRE V6 Automatic Only TUNED Design

Primary Pipe:1 ½" (38mm)

N/A Outlet (flanged):2 ¼"(57mm)

Fitting Time: 2 ½ Hrs