Home Made Mi16 Throttle Body Manifold

[M_R_205 5 1 Cars]

Being on a very tight budget i was thinking of ways to save some pennise on my mi16 build, and when i saw a longman.jenvey inlet go for £180 i though it was a painful amount for basicaly a lump of cast aluminium!

 

So i orderd some 6mm alloy plate, (100m x 400mm) and choped my standard manifold down (probably a little to short but what the hell!)

 

Did a quick half hour drilling and hacksawing and.....

 

Can anyone see where im going with this??? it looks a bit roungh at the moment but tomorrow at work il finnish the 2 plates off, take the manifold to my local engine place see if they will make my 4 cuts nice and level (hopefuly for the price of some biccies and a cuppa ) and then give it to a mate to weld up

 

(and please no tidy your desk comments its on the `to do` list!! )

Edited April 9, 2008 by M_R_205

[205toby 0]

Good stuff! Have to let us know how it works. What sort of engine management are you planning on running with those?

Cheers,

Toby

[petert 550]

Mine is made the same way. You have to be careful with the angle however, or the bonnet won't shut. I suggest a few tacks with the tig, check with air cleaner(s), then fully weld when you're happy the lid will shut.

 

That one works ok, but I have another on the way, which uses tapered tube to blend more gradually from 45mm down to 40-41mm, before the DCOE flanges. The transition needs to be gradual or else flow becomes turbulent.

[DrSarty 90 1 Cars]

I like your style Paul. Whose is the mug on the left?

 

[M_R_205 5 1 Cars]

Mine is made the same way. You have to be careful with the angle however, or the bonnet won't shut. I suggest a few tacks with the tig, check with air cleaner(s), then fully weld when you're happy the lid will shut.

 

That one works ok, but I have another on the way, which uses tapered tube to blend more gradually from 45mm down to 40-41mm, before the DCOE flanges. The transition needs to be gradual or else flow becomes turbulent.

 

 

I think im gong to have to angle the two faces at about 40-45 degres so that the bodies point downwards slightly, Iv just noticed thismorning that the DCOE flange dosnt match the mani quite right so im going to have to get my pall to fill the edges out with weld and do a bit more griding, the std manifold is only around 40mm too so i was going to open the whole thing up up as much as i could

 

I like your style Paul. Whose is the mug on the left?

 

 

MY MUG lol

[VisaGTi16v 1]

Have you been using a drill then a hacksaw to cut out the 4 large holes lol? Have you not heard of hole saws!!!

[M_R_205 5 1 Cars]

Have you been using a drill then a hacksaw to cut out the 4 large holes lol? Have you not heard of hole saws!!!

Unfortunatley so, i find the hole saws painfully in-accurate and my lathe is buggerd although im using a mi16 drive shaft to fix it lol!

 

Iv made the hole about 42-43mm so i can tidy it up when my late is fixed or just use a flap wheel when its all welded up

[Tom Fenton 1,525]

Have you been using a drill then a hacksaw to cut out the 4 large holes lol? Have you not heard of hole saws!!!

 

I must admit I thought the same thing!

[Stu 18]

Good work fella, what bodies are those?

[M_R_205 5 1 Cars]

Well i didnt get a chance to get the manifold `made level` but my mate recons he can fill the little gaps with weld any way i finnished off the holes with a file while at workbut as i said above they dont match the manifold perfectly so il have to gind a bit out,

 

Stu_Da_Rude, there puma racing bodies

 

heres a couple pics showing what i mean...

 

Im off ot amsterdam tomorrow so i wont be able to do any more to them till i get back on wednesday, but hopefully they will be all nicly welded up and wont need much more work done

 

Paul

Edited April 10, 2008 by M_R_205

[base-1 17]

The Puma linkage is pretty complicated, make sure the bodie flanges on the manifold are perfectly flat with each other so the bodies sit at the same angle!

[Rippthrough 98]

Could have milled you those cheap if you'd mentioned it

[M_R_205 5 1 Cars]

at last an update on this, picked the manifold upp from my mates thi moringing and hes done a sterling (and free ) job of welding them up, loads of filler as i asked so theres plenty of metel for me to play with

 

Heres the manifold before any grinding..

 

And the injector holes ave been filled

 

A little work with a file and flap wheel

 

Should finnish the grinding tomorrow, i need to take more metal out between the to tract and open them out a little more.

A couple pics looking down the throttle bodies...