Making some kick ass pipes for 2nd gen commodore

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

^ I guess you have to say apart from the satisfaction of building your own that’s solid advice. Pete, David Vizard burst on the scene maybe 30 years ago as the guru of building ultimate hp Minis (don’t laugh). He then went on to other stuff, I have a book I am pretty sure he wrote on nitrous oxide for example. He is a no nonsense guy but based all his stuff on theory. Well worth reading.

 

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

Yes I also know a few people that have run 9s on 5002  1 3/4 picies of the shelf, but iv also seen one  of them cars gain quite a lot by goin 2 inch 4 into 1 and still drives quite fine so they where restricting it from what it was capable of doin

 

im not doin it because I’m after more power, I’m doin it because I think it’s what the combo crys for and wants

 

I’ll just go back a gear or clutch it and wait for the car to catch up to the wheels speed lol

 

I do know what every one is saying about the low torque and this is a great conversation, I really do know what delco wizard is saying and I do really appreciate the input because bigger isn’t always better

 

On the above even low to mid torque says between 1.86 – 1.987 or for 2 stepped is same and steped after 10 inches witch when converted is 1 7/8 to 2 inch just like I’m doin unless I do the cone idea witch I really like

 

even the collector suggest 3.5 or bigger and for max hp says 4 inch witch is what blakes done on his vnss i think

 

if I had a hydrolic cam in the 23# 24# that reved to 6000 rpm I would no doubt do 1 7/8 with 3inch collectors

 

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

My experience is (for what it’s worth) unless you are running this on the strip constantly you won’t actually see or feel the real gain.  But then that’s not what car building is always about.  Sometimes it’s about trying something you think matters and seeing where it takes you. Who on here can say they built their own extractors?  If I did I would be researching the crap out of the best runner lengths and diameters. At the end of the day you are boosted. I imagine the best money you can spend is on the rotating assembly and block.  Want more power, turn up the boost.

for what it’s worth that is why my car is big capacity, NA.  Been down that path, in my day it was huge cam, peaky power. Stuff that for the street. But as I say, car modifying is about the heart not the brain.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

For me an exhaust is about the brain, then the ears, the seat of your pants then the heart. Oh, yeah then the missus then the cops.

Thing is nobody gets to see under the car usually:

but I like the fact it represents what I can achieve leveraging my own reason and wit, rather than being suckered by any marketing brand. That freaks some people out, not getting stuff off the shelf, keeping quiet and doing it right yourself.

Follows same job satisfaction of making kick arse wine and not having a brand that’s in the supermarkets

Naturally as-pirated, all-motor.

[delcowizzidParticipant View build HERE Member since: March 2, 2015 Posts: 13]

is that hot spots after the cats or camera playing games looks like thats where an h-pipe should be its in the general area that every system ive ever made for v8 has had the h-pipe fitted

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

delcowizzid wrote:

is that hot spots after the cats or camera playing games looks like thats where an h-pipe should be its in the general area that every system ive ever made for v8 has had the h-pipe fitted

No H-pipe, x-pipe! And that’s way down past the tunnel brace at the rear (second harmonic), straight pipe – nothing in between. H-pipe doesn’t split the double pulse for low down torque.

What appears a hot spot is definitely not hot, after 16″ expanding megaphone incorporating cats.  Just fresh install weld marks.

Also the system is tuned for ethanol, 100° cooler EGT.

 

Naturally as-pirated, all-motor.

[cava454Moderator 93 VR BT1 View build HERE Member since: February 20, 2015 Posts: 2 390]

Pirate do u race your car?

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

No way officer.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Haha Do I even lift, Bro?

Yeah but nah its a two-tonne rockin’ rep wagon, so ima…

Living easy loving free, season ticket on a one way ride

Askin’ nothing leave me be, takin’ everythin’ in my stride

Tweak my engine, V-V-T

Ain’t nothin’ that I’d rather do…

High compression Party time!

My friends are gonna be there too (woohoo!)

No stop signs / Speed limits

Nobody’s gonna slow me down

Like a wheel, gonna spin it

Nobody’s gonna mess me around

Hey satan, paid ma dues

Drivin’ round with that stocko sound

Hey Coppa, look at me!! I’m on my way to the promised land… Whoo!

Sorry I digress. Mainly race up the shops and back.

Naturally as-pirated, all-motor.

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

Might NOT have been such a hot idea plumbing the exhaust into the cabin Pir4te

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Nah having some brews at the Beach Hotel, Byron Bay and a bit charged to get my car back shortly

Naturally as-pirated, all-motor.

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

pir4te wrote:

Nah having some brews at the Beach Hotel, Byron Bay and a bit charged to get my car back shortly

LOL long way from home, always good to get one back and running.

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

Great so your in Byron bay and I’m in the frickin dessert

 

way to make my day lol

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

Pics? Progress?

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

Well these turned up today

 

progress ss will start this weekend but I really think it’s goin to be at least 3 weekends or more to make these

 

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

And also think I’m goin to need to use proper slip on merge collectors as I relay think each pipe will need to be installed individually then the collector slipped over them

 

will see how I go

[Anonymous View build HERE Member since: January 1, 1970 Posts: 0]

Cool, looking forward to the progress :XD:

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

So started making pipes from cyilenders 1 and 3 to start with, I’m definetly getting some slip on collectors and each pipe is individually fitted

 

first problem was was the flange didn’t even fit, so had to grind down some spots, this is just rough as and just getting it fitted, I’ll smooth them up and round all the out sides nicely soon

So first was getting the 1 7/8 parts on and these are 8 inches long and in my case I had to make cyilendar 1 clear the alternator

Then can see here iv gone under the engine mount with these 2 pipes as that gives me heaps of room for pipes on pots 5 and 7

So these 2 pipes ended up looking like this so far and both come out near bell housing ready for when the collectors turn up I can add the rest to connect up

 

these 2 pipes where fearly easy and are the longest that had to be done so this is the length I’m sticking to now

[vs manta 218Participant Vs hsv manta View build HERE Member since: March 2, 2015 Posts: 796]

Then I got the 1 7/8 inch 8inch long parts fitted to cyilendars 5 and 7

 

5 and 7 are a little out of wack to each other so I’ll fix that before I continue on

 

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

Mate seriously have to admire your willingness to have a go. Can’t wait to see how these turn out 

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