Twin Seq. Dry sumping for beginners :D

[Gunni]

Have you even read this thread?
I don´t think Brown is going to have any problems.

Yes i have - you dont think hes not going to have any problems?

OK

Andrew

I surtenly do not.

[Turbo-Brown]

Right, it'll soon be time to start thinking about oil distribution to the turbos!

I've ordered some 8mm dia stainless steel tube which I think will look quite nice and with a 6mm ID it'll not restrict flow of oil. However, I have no idea what size restrictor I need to put in the end of each feed where it goes into the turbo.

Any advice / experience peeps?

It's for the H1C and the HX27 if that makes any difference

[Turbo-Brown]

Also, do we think it's worth making a non-return valve to go in the distribution block so the oil doesn't drain back from the turbos when the engine's off?

[Karan]

couple of garrett t28 style turboes i have if i remember are about 4mm diameter

[Karan]

Also, do we think it's worth making a non-return valve to go in the distribution block so the oil doesn't drain back from the turbos when the engine's off?

its an idea but i wouldnt worry as none of these jap cars i have come across have this....

[Ant]

NRV on the oil feed line could result in coked feeds pretty quickly Alex, learnt that one the hard way on my old S12


6mm ID is a little generous IMHO , perhaps run a 6mm ID header in hard pipe with twinned braided flexihose in 2mm(example) and kill two bird with one stone ?

run the flexis downwards from the T possibly.

[Turbo-Brown]

Many thanks for the input guys, that's very helpful indeed!

Will scrap the idea of the valve and make a U-bend to help prevent all the oil draining back.

Have ordered the pipe now so gonna stick with the 6mm ID I think, would rather have too much flow capacity than too little

[appletree]

Have you got the reducer yet?

[Turbo-Brown]

Picked it up from my parent's house today dude, poifect! Massive thanks for sorting it out for me!

Here it is in all it's glory:




Have had a giant hangover after my mate's wedding yesterday so haven't achieved much this weekend other than to make a nice shiny stainless steel V-band flange for the H1C. Forgotton how evil stainless is to machine though so it took quite a lot of time




Also had another box waiting for me but couldn't for the life of me think what was in it!

Turned out to be my wheel spacers which I'd forgotten all about!

Unlike usual spacers which fit between the hub and the wheel to push it outwards, these fit between the rim and the wheel centre to push the whole rim back towards the car.

I designed them to locate the wheel centre as it was originally with a register:




So you have four per wheel, just for the fronts:




Absolutely love the staggered offset they give, with this being the new offset of the front:




And this being the reasonably dishy rear



Nice little gif, many thanks housemate Stu!

[Turbo-Brown]

Made some decent progress this weekend on the exhaust manifold!

Been putting off making the bypass plumbing for the EDV but finally decided to get on with it as the outlet flange for the HX27 turned up during the week

So in no particular order, here's the first tack on of the outlet elbow with all turbos in place:




Had a bit of an eye up to decide where the pipe should go, also offered it up to the engine in the car to see whether a 3" down pipe might fit in afterwards. Then cut the bulk of the material out of the H1C support to let the pipe from the HX27 in. Dad's not made the bench for the new milling machine yet so I'm still on the lathe....parents eh, who'd have 'em?!




Had a quick last meaure up just to make sure everything cleared.




Re-angled the outlet elbow and then set to making the adjoinint bits. I know I've got the expanded bit of pipe on round the wrong way, but it's the only easy way it'd fit.





And fit it does does!




With room for my 3" down pipe too! (just a bit of ali tube as a mock up but it's a releif that it goes in!!




Also, got the translator welded onto my Vee-band flange this weekend, but that's less interesting than the rest of it

[gareth]

looking good!
one thing though... is the clearance between the pipework and inner wing a bit tight? my M30 has similar clearance between the exhaust manifold and steering column and will sometimes catch on hard left handers, though with nastier results than you'd get!

[stuartgallafant]

this is gonna be insane!!!

[march109]

Alex your making me look lazy, I still need to source a 320i and 325i as well as a few other trick bits.

[Turbo-Brown]

Many thanks guys

looking good!
one thing though... is the clearance between the pipework and inner wing a bit tight? my M30 has similar clearance between the exhaust manifold and steering column and will sometimes catch on hard left handers, though with nastier results than you'd get!

It is close, but I used to have less clearance to the chassis rail with my old front turbo and it didn't foul. Did have to tweek the engine over a little bit though.

Gonna make some nice stiff engine mounts this time round though to prevent the engine moving too much under cornering and braking.

Alex your making me look lazy, I still need to source a 320i and 325i as well as a few other trick bits.

I've got a 320i bottom end kicking about if you want it dude

[march109]

Yeah sure, will have to sort price and delivery out when I get back from Le Mans though as I'm leaving tomorrow.

[Turbo-Brown]

No worries dude, have a good time!

Don't suppose anybody knows where you might be able to buy a TIG torch with a 180degree head do they?

Need to do some welding down one of the pipes where the standard torch can't quite reach but can't seem to find 180degree torches in the UK!

[tubby17s]

i thought you could get bendable ones. have you checked ebay?

[e30_Turbo]

Awesome Alex!

Your H1C looks far to clean

See I told you a 3 inch pipe does fit!

Where are you going to have the split? downpipe to exhaust?

And for your info a 3 inch pipe needs to be pinned to the rear beam to make it over most speedbumps

[Turbo-Brown]

Yeah, can see the bendy ones, but you can also get dead straight ones which I reckon would give better visibility down the pipe I'm welding. Might be able to make do without though, will see this weekend!

Not sure where the split will be Mark, there's just SO little room left in there!

It's got to be accessible with a spanner and leave room to remove other components like that bit I made last weekend for example.

Anyway, all the exhaust stuff's on order! Although I forgot to get any silencer wadding Won't stop me cracking on with the rest of the system though

I've only ordered the 3" stuff for the time being as I'm not sure it's going to be possible to get a 2" pipe out of the WG. It pains me to say it, but I might have to just feed it back into the main system

We'll see though, would much rather have a full 3" and full 2", but like all things, what's possible will win out in the end

[e30_Turbo]

Run the screamer pipe out via the battery tray and out through the wing, it's been done a few times and a mates old turbo'd track car did the same, looked weird but damn did it make some noise!

My screamer pipe comes out by the sump and my WG is forward of the turbo.

Something I have noticed is that since I upgraded to the 3 inch charge pipes the screamer pipe has halfed in volume, would they be conected? No performance change, just not as loud any more.

Saying that the exhaust itself is a lot quieter now it's had a few thousand miles worth of gas down it.

P.s. I'm meeting Ed Hall on Thursday

[Turbo-Brown]

I really don't wanna run a screamer to be honest dude, want everything to look and sound subtle.

Reckon it's gonna be pretty quiet at idle with the exhaust gas needing to go through two turbines and a silencer.

Never know, will get the car up on stands and see whether there's gonna be enough room to run my full twin system

Ed Hall eh, someone getting featured?

[e30_Turbo]

I really don't wanna run a screamer to be honest dude, want everything to look and sound subtle.

Reckon it's gonna be pretty quiet at idle with the exhaust gas needing to go through two turbines and a silencer.

Never know, will get the car up on stands and see whether there's gonna be enough room to run my full twin system

Ed Hall eh, someone getting featured?

You only get the screamer when havin it, in fact I can have it and keep the screamer pipe closed, which I prefer to do when the victim isn't aware

No MOT issues either.

The noise is a little harsh but to be honest it fits in nice with the blurry vision and awesome neck snapping acceleration!

When it hits ful chat and starts screaming away you can't help but smile and watch everyone else start crapping themselves wondering waht the f**k that noise is!

And yes, I'm meeting him tomorrow

[Phill172]

Haha fozzy, i was like screamer pipe? What the hell is that!

Good old Youtube provided the answer! That sounded tits!

How does it work? Is it simply just a reroute for the wastegate or something?
mmmmmm can i have two on alexs old set up!

Apart from sexual noise is there any gains?

[Turbo-Brown]

You just let the WG vent to atmosphere instead of routing the gas through a silencer or two.

You could probably fit a couple or external wastegates to my old system, but have a look at how much space there is first Might even be possible to control two turbos with one WG thinking about it.

Gains, you might see a gain from flowing less exhaust gas down the exhaust system I reckon.


Hooray! Got most of the exhaust system bits today, just spoke to Jetex and they say I should have the tight radius bends and slip joint to make the down pipe from tomorrow so if the weather's good, I should be able to get the car up on the stands and get the system started this weekend

[Phill172]

Ah right, i see now, hehe the thing would sound like a bloody group b rally car! Ill get it all in an running first then play around!

Looking at the photos of your build, the pictures really dont do it justice! The turbo set up is amazing and the quality of it is incredible!

Remember shotgunned dibs on this one haha

[Turbo-Brown]

cheers Phill! You get the link to those piccies mate? Will have a rummage for some more when I get a chance, think I've got some on a CD at home.


Hooray! The bits from Jetex have just turned up, all I need now is nice weather for the weekend!

Seem to recall there being about 110mm clearance from the outlet of the H1C (after the translator) to the wastegate and the bends measure about 105mm so think they should just about squeeze in!



Shame it's gonna have to make such a sharp turn, but beggars can't be choosers!

I reckon if I turn the WG around so the outlet points at the battery tray, chop some more out of said tray and relocate the OSF brake pipe, I can get my full 2" WG system in there too.........but we'll see

[e30_Turbo]

Stop f**king about and stick it out the wing!

You know you wanna! ( well I do anyway )

[Phill172]

everyone knows that cutting body work to fit a bigger turbo is the fucking shizz!! do it! haha

Yea i did thanks, they helped alot! I just cant help myself though, im cleaing everything! its going to be clean engine bay, ratty car by the looks of it!

I think once these are both running, we need to go hunting! Or maybe just a turbo meet!

Hoping the weather clears up too as i need to get some work done on mine too!

[Turbo-Brown]

Not sure how well plastic wings would react with searing heat though

Here it is, my exhaust system in half it's glory!

Sounds like I'll be using the car as an umbrella this weekend, but it'd be a great boon to get the exhaust and manifold done as they're such large components in the grand scheme of things.

Gonna give the tail pipes a proper polish this time round, none of this brushed look Still not too sure about how a pair of slash cut 3" tail pipes will look, but time will tell!

[appletree]

How much were the tight radius bend? and do you know if the avalable in 3"?? might need some for my MK2

[Turbo-Brown]

Think they were about £17 each, they are indeed available in 3"

They're an absolutel life saver where the space is tight!

[d6dph]

That the sort of tailpipes you are aiming for Alex, Just larger diameter?

[Turbo-Brown]

Can't quite see if they're slash cut in the piccy there dude, but essentially yes Nice clean and simple lines similar to these:


EDIT> Can't really see the slash cut in my pic either


It's just spend spend spend this week! Bought a water pump for the charge cooler today.

Was looking into electric ones and umming and aahing over whether to use a marine bilge pump or a little dedicated electric one such as can be found on e-bay. My biggest concern was the reliability of electric pumps

Spoke to Dad about it and he reckoned it's possible to buy remote mounted, engine driven pumps for marine craft which got me thinking the odd car here and there might have the same type of arrangement.

Turns out the Toyote Carina E does so one of those is on it's way Just gotta knock up a pulley and mounting plate for it and the vacuum pump which does the actuation of things and that's that taken care of

[d6dph]

That any better?

Only a very slight angle on the slash part. I can get better pics and angles if it's any help?

[gareth]

alex, if you're going for the sleeper look, i had an idea a while ago that i may still do to my scorpion M3 system...
you know a lot of diseasels (VAG comes to mind) have twin downswept tailpipes...? i'm toying with the idea of twin phat diesel downswept pipes, painted matt black

bling removal