.:{DAJ37}:. Raptor Blown VT V6 Manual

[aussiguy87]

i droped .5 of a sec at the drags wif 69mm throttle body 12mm plenum spacer and 25mm manifold spacer and mace cold air box went from 15.8 and 2.4 sixty ft to 15.3 with 2.096 sixty ft

[impulsesv6]

To me that says pay est $130 so you have a plenium you can touch.

that was my thought... and seat of the pants dyno when i fitted mine NA, havent bothered with it FI...


ive removed the rubber seal at the rear of the engine bay, the bonnet seal...
helps with airflow over the top of the engine i would like to think...

but apart from that, you aint melting any plastic so stop stressin, haha

[Raptorsc]

ive removed the rubber seal at the rear of the engine bay, the bonnet seal...
helps with airflow over the top of the engine i would like to think...

I have done same on my Subaru, made a world of difference, recommended to at least remove any front seals

[psivyv6]

is there any point in an intercooler cooling the air if its entering a boiling hot plenum? wouldnt the plenum heat the air as soon as it enters?

[sircruisealotVS]

Fabz man, VT's looking good!
I really don't know whether the mace insulator does much, i fitted one, didn't notice any sort of difference in the drive (but kinda hard to tell - it can feel different just from the time of day). Although the runners and plenum seemed to give off less heat, so thats got to be a good thing in the long run.

Best thing for you to do is box that pod up! I noticed a definate improvement after doing mine. It idles better, reacts to throttle better, and it doesn't feel doughy after driving around in stop start traffic when it's hot.

[totq]

is there any point in an intercooler cooling the air if its entering a boiling hot plenum? wouldnt the plenum heat the air as soon as it enters?

Yes there is a big point in cooling.
It's a matter of relativity... just to explain, say plenum is 100deg.
No cooling - air goes in 80deg, so as it gets in the plenum it will be between 80-100deg.
Cooling - after cooling, say air is 40-50deg, so as it gets in the plenum, it will definitely be a lot cooler than between 80-100.
Hope that makes some sense.

[MACE]

Manual Raptor nice

As others have mentioned if you can get the pod boxed up it will be a huge win

As for the spacers the main reason they work is not so much that they keep they manifold cool (which they certainly do) but is the fact that change the savaging properties of the manifold. In that the manifold is working more efficiently base on the engine's operating limits. This is based on Helmholtz resonance principle

For some more detailed info check out the following links

http://en.wikipedia.org/wiki/Manifold_(automotive)

Helmholtz resonance - Wikipedia, the free encyclopedia

It's for this reason there are genuine gains on the dyno and track in particular the lower rev range. On V6 with mild bolt on mods they normally knock off around .2 to .3 seconds off 1/4 mile times.

[fabz]

Cheers for that Mace, some good reading there. I have been talking to a few people about twin throts vs bigger throt and they all seem to say twins are the way to go but i would assume a retune would be needed? Is there much of a gain to be made from twins or will a single larger one be better?

I actually think i remember a thread about this but cant find it.

[MACE]

Cheers for that Mace, some good reading there. I have been talking to a few people about twin throts vs bigger throt and they all seem to say twins are the way to go but i would assume a retune would be needed? Is there much of a gain to be made from twins or will a single larger one be better?

I actually think i remember a thread about this but cant find it.

The twins work well, however we've stopped making them because of the cost to get them going, more importantly though because of how good the spacers work all without a tune

[fabz]

So i was talking to a few aircraft engineers at work here and they seem to think that trumpets with 6 individual throttle controls could be possible then mounted on top would be a custom fab pelium. My question is, how would this work? How would i set up a TPS to work off all 6? and does the IAC come into play? basically i know they can all be connected with rods to a main "wheel" as such which would operate all 6 together. I would also think a new tune would be needed.

Now this is just a thought that has been put in my head so i dont even know if its possible. They also mentioned that porting the manifold with improve flow, aswell as having a larger pelium chamber to help flow? Can anyone comment on this?

Basically i just want something different for now until i build a new motor and i have access to a wide range of people to custom make things for me so i just want to put it out there and see what people think and maybe your ideas on what can be done or even done better so post them up!

[immortality]

hakhawk has been working on the IR runners idea with indervidual butterflies. it is possible but would be a complete custom one off and would require some tuning. TPS isn't a problem but getting the IAC valve to work could be

[Raptorsc]

Porting and plenum volume will all yield benefit for sure

Intake butterflies on each runner - try it, TPS should be fine but some other functions (as mentioened) may be a slight challenge. Not sure of power gains

[Boonz]

AIC could work off a pushrod actuator setup, send the solenoid a signal and the rod could push against the butterly connecting shafts?? would have to be pretty precise tho cos you wouldnt have to move the butterflys stuff all when theres 6 opening

just a thought...

[fabz]

i have a few days off from work, just living in cairns ill have to hunt around to find someone who might be able to point me in the right direction and maybe even help fab this. The more i think about it the cooler the idea looks in my head plus with a second car i can have th vt off the road no dramas. Cheers for the help so far fellas, anyone else got any tips? Also is there a certian length each trumpet needs to be? or wont matter?

[immortality]

trumpet diameter/taper/length etc all have a effect. more so for a n/a application but as has been demonstrated with the manifold change on a raptor charged VY alloytec gaining some 20rwkw.

have a look at some of the aftermarket manifolds for the holden V8/LS1 and LS2 from harrop and others to see how they set things up

[fabz]

I just got in contact with a guy in cairns that may know a little something something about this. I will be off to see him on monday for a chat to see if we can get the ball rolling. Hey tim is there anything i would need to let him know about the charger side of things? and i would assume ill have to get a re tune for this which means heading to the goldie with the car? or do you have someone in mackay that can take a look? Another thing is what volume should the plenum be and what shape? Im thinking the intake opening can be facing the front of the car so i can reduce the cooler piping slightly.

[totq]

Any trumpets fitted yet?

[fabz]

nah waiting for compound charger system to be up and running so i can see results and make a decision from there, slid around a corner for the first time today with the new diff in, lots a fun but still cant justify $600 worth of smoke so im gonna be a good boy lol

[fabz]

Few new additions to DAJ37, put a little more stopping power on it so now have DBA slotted rotors and Bendix stealth pads all round. Cleaned up the springs while it was up to and painted all calipers red. Rims are currently getting painted white with black writing, stripes are coming off and some new shiny things arrived a while ago so getting in to put them on. Plans now are focused on intake, theres 2 i want but just need to make up my mind. Took it for a drive on 15" just round the corner to keep the batt charged....lets say wont be doing it again any time soon as i like my licence hahaha

[fabz]

White rims. Now just have to paint the writing in black again and all done.