sxyvet

hi there guys,
just wandering is there enough material to port the as&m large runners?
apparently the as&m runners are 42 mm in diamater standard!
the first intake runner size is 45 mm diamter and ken@ first intake said they can be ported to 1.9" and there runners with plenum/base flow 230cf!
how hard/expensive would it be to get some one to make up a set of say 2" diamater runners?
the as&m runners are $435.00, the first intake set up is $999.00 and so on!
if you had large runners say 2"diamater and the plenum ported to match along with the base ported all that size, would that let the tpi breath past that wall of 4,500/5,000 rpm do you think plus more flow& revs?
you see i like the wow of the torque power of the tpi only much greater would be nice,and with more revs would be better!
just wanted to see what you all thought of this thats all!
thanks
glen

88BlackZ-51

Just curious. Why spend the extra money?

sxyvet

why spend the extra money?, i want the tube runner size to be larger thats all!
know one seems to think much of this idea though!
cheers
glen

Hole-Shot

AS&M runners don't have much room for porting. The walls are thin.

Standard "fast" is basically the same diameter as AS&M.
1.9" is 48mm, so there isn't a real major size difference (ported "fast") from the AS&M.

How much $$ is the "fast" system?

Fastmax32168

The "Wall" is not caused by the size of the runners as much as it is by the length of the runners. In order to raise the RPM band you need to shorten the runner length. The only runners I am aware of that allow you to do this are the SLPs. Although they dont flow so well out of the box (they are really no larger than the standard runners at their centers) they have tons of room for enlarging them, as well as allowing you to siamese them as far down as you care to, shortening the runner length and raising the RPM band.
Roy

sxyvet

hi roy,
thanks for the advice mate!
so seeing ther slp runners are shorter in length which i didnt know then,
if you port the hell out of them and siamese them then they could be quite an attractive propsition as you will have some torque and higher rpm then?
what diamater do you think you could port them out too?
could you port them as far as the as&m and first runners do you think?
what is the flow the slp runners run at do you know?
also do you know what length the slp runners are?
thanks for your advice and time!
cheers
glen

sxyvet

hi there hole-shot,
thnaks for your reply also and info!
i was wandering who/what company you mean bye when you say
" standard"fast" system?
do you mean "first"intake?
thanks
glen

Fastmax32168

The SLP runners are not really shorter in length out of the box.
The biggest you can get them is an average of about 1.75". (about 45mm)
Heres a pic of how you can siamese them to shorten them.
This is a pair I was working on, they werent done yet but you can get the idea. As best as I can measure I am going to end up with a total runner length of just over 10 inches and an average diameter of almost 1.75" versus 13.5" and 1.5" in a stocker.
I am putting it back together tomorrow, I will let you know if it works as I expect it to.
One more note. This job was a major PITA, not for the faint of heart.

cv67

dagrump has ported the SLP to death....Do a thread seearch and maybe his thread will pop up. The factory TPI base has plenty of meat on it too for porting.

Hole-Shot

:o oops :o yes I meant "first".

Razor89

I think so!

Here's a short clip of what my large tube runners, Big Mouth and ported plenum can do. Watch and listen

http://s129.photobucket.com/albums/p...=Ricksdyno.flv

5,700 rpm and 125mph. in 4th gear. TPI can still be fun on the street.

rel3rd

Looking good there Fastmax! I'm in the process of doing the same thing with my new SLP's. Mine are about 75% done. Definitely a loud, messy job, but I'm using the same runner diameter/length theory that you are.

rel3rd

Yeah...that thing really fell on it's face at 4500...lol.

Any "still" closer pics of that dyno graph? What I could see, it looked to be very smooth and broad...

Razor89

Just check "My Photos"

The GTech graph shows that the car on the 1/4 mile continues to pull. I have kept my foot on the gas until 120mph on the track. I trust my brakes

rel3rd

Sweet numbers and sweet looking Vert!
No "WALL" on that graph.

btw, Are you the 12.50 car, or the 13.0 car?

Is your car "chip" tuned? or no? Just curious.

Razor89

My car is a solid 13.0 and 106.5mph. car with a bad clutch.

I used to get 1.8 short times, now I'm lucky to get get under 2.0

I'm looking for a 12.7 next summer after a new clutch and few other tweeks here and there.

I used mostly TPIS parts and used their stage V chip programed for the mods that I have done. I think the tune is right on and on the first try.

TPIS is a little pricey but I like to support local merchants.

rel3rd

Nothing wrong with using what works.
It's refreshing to see a car that runs very well with TPI, even though most seem to preach that it CAN'T. I'm sure that your car is an absolute blast to drive. Well done.

They definitely got the tune on...Man, you couldn't make that a/f line any smoother without a straight edge, lol.

Razor89

Thanks it is a blast to drive.

Good luck with your build. I'm curious to see what your results will be.

sxyvet

hi guys,
im thinking may be i can get my local guy i know who does alot of custom performance car mods and exhausts could possibly make me up a set of new alloy mandrel bend 2" diamater bye 10"-12" long intake runners and then port the plenum and base to suit!
im sure if done rite they will give killer torque and some nicer higher rpm,s!
what do you reackon guys?
i love lots of torque but more of the mid- near the top a little would be nice though!
cheers
glen again

cv67