29 replies to this topic

[Monstrous]

Im currently gathering parts for a T2 turbo setup with the mirage manifolds. got a few questions:

1) Im trying to figure out the best way to construct an oil drain, it seems a popular idea is to modify a fuel pump blanking plate to take a 90 degree hose into it.

Looking at some pictures of this setup, the hose always looks squashed in, and i'd be worried about the hose pinching and not allowing enough oil to flow?

I was wondering if it's suitable to run a hose from the oil drain on the turbo to the threaded speedo collar on the pinion support of the gearbox?

I'll be running a digidash so wont need a speedo cable, so instead of blocking this hole off, could i use it as an oil drain for the turbo?


2) On another note, im still trying to get my head round the whole turbo setup:

in terms of the dump valve, ive sourced a metro plenum with dump valve take off, where should the vacuum for the dump valve come from? can it come from the normal vacuum take off on the carb (where the dizzy vacuum would attach)?

Additionally can i take a T-piece off of this dump valve vacuum to run to the megajolt? or will it have to be 2 seperate vacuum pipes?

3) Will i need to run an intercooler with the T2 setup in standard guise? The modified plenum ive sourced also has the repositioned inlet for an intercooler, so i can feasibly run one, but what sort of size would i need? if i even need one?

4) final question (for now ) Ive read that the MPI fuel tank and pump are suitable for a T2 setup? is this the case? do they have the correct diameter feed and return outlets?

I appreciate the amount of questions, but im just getting my head around everything before i start anything

Thanks

[hazpalmer14]

a intercooler isnt essential it all depends how much boost you intend on using, but id sat get one.

The mpi tank is fine, it all ready as the pipes on the tank for the return and the fuel pump too.

[Sleepy Stu]

This diagram came from turbo minis obviously ignore the megasquirt bit but the rest might help?




As for fuel line MPI tank will be fine but run 8mm lines instead of 6mm


Oh and just imagine that the inlet fanimold and carb are on the same side in the diagram as the exhaust fanimold!

Edited by Sleepy Stu, 13 February 2011 - 02:03 PM.

[Turbo Nick]

Im currently gathering parts for a T2 turbo setup with the mirage manifolds. got a few questions:

1) Im trying to figure out the best way to construct an oil drain, it seems a popular idea is to modify a fuel pump blanking plate to take a 90 degree hose into it.

Looking at some pictures of this setup, the hose always looks squashed in, and i'd be worried about the hose pinching and not allowing enough oil to flow?

I was wondering if it's suitable to run a hose from the oil drain on the turbo to the threaded speedo collar on the pinion support of the gearbox?

I'll be running a digidash so wont need a speedo cable, so instead of blocking this hole off, could i use it as an oil drain for the turbo?

wouldn't be an issue i wouldn't have thought, i planned on doing the same but ended up welding up a new fitting for the bottom of my turbo that points it back into the fuel pump hole with a short hose joiner. all you need to do with an oil drain is make sure it's big enough and gravity will let it run away.


2) On another note, im still trying to get my head round the whole turbo setup:

in terms of the dump valve, ive sourced a metro plenum with dump valve take off, where should the vacuum for the dump valve come from? can it come from the normal vacuum take off on the carb (where the dizzy vacuum would attach)?

Additionally can i take a T-piece off of this dump valve vacuum to run to the megajolt? or will it have to be 2 seperate vacuum pipes?

trigger for the dump valve needs to come off the inlet manifold, i'd give it its own feed aswell personally. Vac advance take off won't work iirc as its the wrong side of the butterfly. i've got 2 take offs on the inlet, 1 for dump valve and the other for my boost gauge and megajolt which are T'd together.

3) Will i need to run an intercooler with the T2 setup in standard guise? The modified plenum ive sourced also has the repositioned inlet for an intercooler, so i can feasibly run one, but what sort of size would i need? if i even need one?

always good practise and free power to run an intercooler, size wise have a look at the S2 escort RST intercoolers they're a good fit and do the job pretty well.

4) final question (for now ) Ive read that the MPI fuel tank and pump are suitable for a T2 setup? is this the case? do they have the correct diameter feed and return outlets?

yup just make sure its an mpi pump, the spi one will only put out 1bar which is only good for 10psi boost tops.

I appreciate the amount of questions, but im just getting my head around everything before i start anything

Thanks

[Monstrous]

If anyone know the size of the thread on the speedo pinion housing i'd be grateful!! If not i'll go with the standard setup through the blanking plate

The take-offs on the inlet housing, how would i go about fitting them? i assume i can't drill and tap a cast manifold?

Yeah i think i'll run an IC, and yeah been looking at the escort coolers, and the renault 5 coolers, im sure i can get something to fit in there

[Turbo Nick]

inlet manifold is only cast ally, dead easy to drill and tap

[Monstrous]

inlet manifold is only cast ally, dead easy to drill and tap

Cracking!

Need to find a T2 now

Thanks for the help everyone

Again, if anyone knows the thread size on the speedo collar, let me know!

[t@z]

its much easier!

[Monstrous]

its much easier!

Ahh that's a great help mate!

Yeah i figured a way to do it, so i think i'll go this route

what setup are you running fella?

[wolfie]

I dont think going to the speedo housing is a great idea, personally i would find a local fabricator and welder to knock you up a decent drain to the fuel pump hole.

I hope that hose is sot standard stuff as its not oil resistant!

[t@z]

I dont think going to the speedo housing is a great idea, personally i would find a local fabricator and welder to knock you up a decent drain to the fuel pump hole.

I hope that hose is sot standard stuff as its not oil resistant!

seeing as on the t2 has a gravity fed return it just is easier the fuel plate was insanely tight on my set up and well works

nope isnt std stuff got it from apmotorstore and is oil resistant

[Monstrous]

I dont think going to the speedo housing is a great idea, personally i would find a local fabricator and welder to knock you up a decent drain to the fuel pump hole.

I hope that hose is sot standard stuff as its not oil resistant!

I can quite easily fabricate something for the fuel pump, but there is only so much space, and to get it to fit in, without kinks in the pipe and uphill angles on the inlet could be tricky

I don't see the harm in running it back into the speedo housing? as T@z says, it's gravity fed so aslong as it can drain easily..

[wolfie]

i just think its a bodge, the t2 is smaller than the t3 so id dont see the size or room being an issue.

I am currently changing from a t3 and fitting a gt20 and have to make a drain up, the drain will be going to the fuel pump hole as i feel its worth the effort fabicating something up rather than just taking an easy option.

The longer the hose the more chance there is of it being damaged and that looks very close to the gearbox/block mounting faces and the corner of the gearbox so plenty of places to rub though and dump your oil imo, how many miles has this setup done?

At the end of the day if it works and your happy then fill your boots but i just would not be happy with how that looks.

Edited by wolfie, 21 February 2011 - 09:36 AM.

[t@z]

i just think its a bodge, the t2 is smaller than the t3 so id dont see the size or room being an issue.

I am currently changing from a t3 and fitting a gt20 and have to make a drain up, the drain will be going to the fuel pump hole as i feel its worth the effort fabicating something up rather than just taking an easy option.

The longer the hose the more chance there is of it being damaged and that looks very close to the gearbox/block mounting faces and the corner of the gearbox so plenty of places to rub though and dump your oil imo, how many miles has this setup done?

At the end of the day if it works and your happy then fill your boots but i just would not be happy with how that looks.

my manifold is a matty one and sits lower than the mirage one or maybe if you have a matty one and for me if i end up changing the turbo i might fab something next time but the hose doesn't foul or rub anything and at the end of the day what is a "bodge" if you want to do it properly then why not fab something into the gb casing. i'm not saying mine isnt an easy way round something but a bodge is a bit harsh lol

[wolfie]

its not harsh its an opinion based on that photo, how many miles has this setup now done?