Gauging interest in gt17 downpipes
Turbo Mini Forums

I'm interested in a manifold and downpipe

On 26th Feb, 2014 1293 sprite said:
They will work with the high flow type matty manifold too won't they? Looking forward to pics

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1/4mile in 13.2sec @ 111 terminal on 15psi

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1/4mile in 13.2sec @ 111 terminal on 15psi

My high flow manifold is on a mockup head at the moment with a gt17 sat on it. I can send pictures and or measurements if you like? Or even better, I can send the manifold back to you to have a play around with, as long as you do me a good deal on a downpipe hint hint lol.

Pm sent. :)

On 2nd Mar, 2014 Ozyris said:

On 28th Feb, 2014 matty said:

On 27th Feb, 2014 steve7786 said:
I'm interested in a manifold and downpipe

No problem. I have manifolds currently available, and will post up in this threads with pics of the downpipe when it's complete and available.

great news and can you give us a price for the 2 pieces in PM ? =)

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1/4mile in 13.2sec @ 111 terminal on 15psi

How you getting on with these? Any pricing yet Matty? John

If something is worth doing, it's worth doing half of.

On 1st Mar, 2014 1293 sprite said:
My high flow manifold is on a mockup head at the moment with a gt17 sat on it. I can send pictures and or measurements if you like? Or even better, I can send the manifold back to you to have a play around with, as long as you do me a good deal on a downpipe hint hint lol.

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1/4mile in 13.2sec @ 111 terminal on 15psi

Could i have a PM on prices for both please matty, cheers.

Could I also have a pm for costings for both as well please I'm very interested

Sounds like your getting close Matty, look forward to the pictures.

What the mind can conceive the mini can achieve
MITP 2012 17.01 seconds 1/4 mile against "The Don"
MITP 2013 16.83 seconds 1/4 mile

any eta when you might be able to post up a price matty?

Hi Matty, dont suppose you will have the first sets of down pipes available by April ?

Seems to be a very good interest in both the manifolds and downpipes.

What the mind can conceive the mini can achieve
MITP 2012 17.01 seconds 1/4 mile against "The Don"
MITP 2013 16.83 seconds 1/4 mile

Still not 100% certain on price, as I'm still waiting for a quote on the flanges, but looking to be around £150. I spoke to my supplier today though' so should know soon for sure. I also spoke to my pipe supplier, and i am now looking at having the downpipe made out of a single piece with multiple bends. It'll take a little longer to get to the stage of having one complete, but the end product will be a much neater solution. I'm trying to avoid having multiple bends welded together, instead having one continuous pipe that looks more factory looking.

Has anyone got an engine in a car with one of my manifolds on, so when I get the first downpipe made, they can trial fit it straight away? My mock up fits mine, but then I'm trying to take into account that if people have more or less engine tilt, will it still fit!

I haven't had as much time I'd hoped over the last few weeks, as work has gone crazy with getting cars ready for a goodwood meeting. But by spending more time getting the design right, it means it'll be a better fit on other people's cars.

Edited by matty on 5th Mar, 2014.

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1/4mile in 13.2sec @ 111 terminal on 15psi

Mine is matty. Engines in, turbos on etc. it's mounted on one of your normal manifolds not the hi flow.

matty you may want to consider that those with an early subby the engine is situated further back

How much further back does the engine sit in the twin bolt subframe then?

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1/4mile in 13.2sec @ 111 terminal on 15psi

It's not the twin bolt subframes. When they changed to HIF carbs in the early 90s, they moved the engine about 10mm forward.

I'd be interested in manifold and down pipe too :)

Righty I think I've got the final design sorted. I did some more tweaking today and I am now happy with clearances and fitment. Just a couple of pics to see if anyone can see any issues with it. What are people's thoughts on the tunnel position? Without going further across toward the gear selector it's about as high as I can get it?

Please keep in mind It's is only a rough mockup that has been tacked together for positioning and not the finished article. and I am using my old clamp until the new ones arrive (should be tomorrow) the new clamps are 8mm thick instead of 5/6mm which mine is. The downpipe should hopefully be all one piece if my supplier can form the bends that close together.

This downpipe is about as large as you can or really need to go to get good power as its made out of 57mm OD stainless, and should fit nicely over a 2" centre section.

Edited by matty on 9th Mar, 2014.

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1/4mile in 13.2sec @ 111 terminal on 15psi

Looks spot on to me :).

Where will the 02 sensor boss be?

Edited by 1293 sprite on 9th Mar, 2014.

Anywhere you want, I'll weld them on to order.

Edited by matty on 9th Mar, 2014.

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1/4mile in 13.2sec @ 111 terminal on 15psi

Now that's a service!

Can't believe how much room there is down the back of yours, with the log manifold.

great work Matty =)