Side Mounted Turbo Design
Turbo Mini Forums

Hey guys, i have been inspired by wintersurfer and Paul S to go side mounted turbo. so ive had a go at modeling one up.

just a couple of questions:
1) primary lengths im aware that for N/A engines they all need to be the same length, but did hear for a turbo they need to be staggered slightly, is this true and by how much?

2) the tube diameter, should i run the same diameter for the whole manifold or make the tube from cylinders 2 and 3 and where the two outer tubes merge larger?

3) ive based the design on available tube sizes from ojz engineering. i'm a little concerned with the 180 Deg tube just after cylinders 1 and 4 merge, the center line radius is 5" diameter, is this too tight? will it get too hot?

4) finally as you can see its not finished because im not sure whether to merge the center tube into the Y section, merge it after the 180 Deg bend or continue it straight to the flange using a separate pipe.

your help will be greatly received.

Cheers Chris

1972 998 TURBO SLEEPER

School boy error, just had another read of Paul S "remote turbo" thread which answered a few of my questions. sorry

1972 998 TURBO SLEEPER

Care to fill us in on the schoolboy error?

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

I didnt properly read Paul S thread

1972 998 TURBO SLEEPER

Nice drawings , i spy nissan GTR turbo

Also my opinion , i would try to shorten runners a little maybe aim cylinder 1 to turbo but make 4 go down further to make up the lenght sort of like the one i did for pristic.

Edited by benjamin on 15th Mar, 2010.

1152cc turboed mini clubman, most powerful 1.1L a-series?

http://boostmini.justboard.net/

Depending on the radius of the bends, but the pipe rising up to the turbo may hit the transfer case as you have drawn it.

The radius of the bends that I use are even tighter, which puts the pipe in the right place but it will impair flow a little.

The other thing the I thought was advantageous was to angle the turbo so that the compressor outlet will point to the intercooler inlet in the grill, thus minimising losses in the inlet pipes. It also added a bit of length to the middle runner to even them up.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Keep the centre tube seperate. It does flow for 2 cyls

Then if someone made a proper T3 twin scroll housing....wouldnt that be good !

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Thanks for the input guys, the turbo is a T28, it was the only model i could find which was roughly the same size as the T3.

I was a bit concerned with the overall lengths, as this is the first iteration ill try and get the short.

Paul do you mean mounting the turbo parallel to the block? so that the compressor outlet points forward and the exhaust inlet points backwards towards the bulkhead?

1972 998 TURBO SLEEPER

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Great setup, but if i mount it parallel to the block wont the compressor inlet be pointing straight into the side of the head.

just thinking out side the box a bit, what if the turbo was mounted the other side of the block (eg water pump side) the compressor inlet will point away from the block?

1972 998 TURBO SLEEPER

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

thanks Paul ill have a play with the angles.
i'm not going to running inner wings so wont be as limited for room as wintersurfers setup

1972 998 TURBO SLEEPER

it seems this year is going to be a sidemount year :)

Yes i moved to the darkside

Instagram @jdm_brett

I would start by making to the exhaust from number 1 as direct as I could towards the turbo, and then make the other 2 to suit, making them collect closer to the turbo.

Number one pipe would be nearly straight apart from a slight bend to avoid the inlet manifold, the other 2 would curve over that pipe and join from the underside probably about 6" from the turbo .

I have a picture in my head but fook drawing it! :)

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

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Thanks for the input matt, do you mean something like this?



ive tried to get a tighter angle of the turbo Paul (ignore the actuator)

1972 998 TURBO SLEEPER

Great CAD work !

That .Dwg for some money to some people :0)

AutoDESK ?

My 79 Clubman Build Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=451008

Jamie.

looks good, bloody shocking how little option we have i.e overpriced mirage or std which you need to do the bulk head.

what program is it you use?

Cheers guys,

the images were taken in SolidEdge which i use at work and i use Solidworks at home. personally Soildworks is better for design manifolds

1972 998 TURBO SLEEPER

Ok i really should be doing work, but ive taken everyone's input into consideration. ignore the turbo positioning at the moment it will be further out. the back face of the centre tube is about 130mm from the manifold mounting face.

1972 998 TURBO SLEEPER

Thats exactly what I mean mate!

Bring the middle pipe engine side of No. 4, then collect them all together just by the join before the last bend. You should be able to get them the same length by altering the bend radii.

I could be worng but...Keeping the primary lengths as short as possible reduces heat loss, which helps to reduce lag. Stand to be corrected though?

Edited by matty on 15th Mar, 2010.

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

Nice, come on then guys theres more than enough experianced folk on here get some made sell one to me and lets make some silly power.

Rick

FFS, that is pretty much what Ive been designing for the last week or so.
Nice work

Paul

Edited by paul wiginton on 15th Mar, 2010.

I seriously doubt it!

longy your a bloody fast worker :)

i like would you make these if they work?

im going to cut and shape the tubes myself and get matty to weld it so highly unlikely ill want to make more then one sorry

1972 998 TURBO SLEEPER