M30 Turbo update thread ****RUNNING

[Turbo-Brown]

Why not just get a T3 flange and weld a splitter into it?

[Toby_Unna]

yeah i was just wondering that

cheers for having a read on my behalf Jon

did a trial fit today, that bloody turbo is massive, gonna have to mod the manifold a bit (again) but it will fit ok i think.

got scared off and took the inlet manifold off instead (in the rain) so i can machine it to put the throttle body on the other side!

also got a lot of alu piping in different diameters to make up some Y-pieces to feed air to the ICs. so much to do!

[Jon_Bmw]

got scared off and took the inlet manifold off instead (in the rain) so i can machine it to put the throttle body on the other side!

also got a lot of alu piping in different diameters to make up some Y-pieces to feed air to the ICs. so much to do!

Bloody hell i forgot that thats pointing the "wrong" way, so many things to think about and eventually get done.

These Y pieces, what are you doing with them I can't work it out.

[Toby_Unna]

twin ICs and ony one turbo. putting the ICs in parallel, so i need to split the airflow using y-pieces.

here's another question, what do i do about the cam-cover-to-rubber-intake-hose breather pipe?

the manifold thing won't be a major problem, have already tidied the surface with the grinder. just need to use the old gasket as a template, put the holes in with a drill/grinding stone, then get someone with a milling machine to make the surface flat.

um and block the old hole off with a plate!

[Andy335Touring]

Could you plumb the crank case breather on to the suction side of the turbo ?

Every where else will be presurised(sp?) ?

Or an oil catch tank like mine ?

[Jon_Bmw]

I didn't realise you were doing twin intercoolers, this really is going to be a beast.

Pretty much as Andy said, you can't leave it connected as there is positive pressure there. Being crude i blocked off the hose where it connects to the throttle body , when just connected a breather vent onto the rocker cover. Seems to work ok, do get some smoke outta of it, like a little chimney!

[Toby_Unna]

Could you plumb the crank case breather on to the suction side of the turbo ?

that sounds like a remarkably good idea mate

you wouldn't believe how bad the standard m30b34 port matching is between inlet manifold and head, the port openings in the manifold are tiny compared to those in the head!

[Andy335Touring]

Did you get my email last night ?

Are you going to dremel the inlet manifold ports out ?

[Toby_Unna]

yep mate, completely forgot, that sounds like a very good investment!

how much do i owe you for the bung and plug?

[Andy335Touring]

yep mate, completely forgot, that sounds like a very good investment!

how much do i owe you for the bung and plug?

Don't worry about it mate, it was only a few quid.

Your 'pina manifolds are doing well

[Toby_Unna]

Intercoolers.

don't know how i should plumb them now. the stubs on the ICs are the same diameter as the turbo comp outlet. so does this mean i'm ok using the same diameter piping everywhere and running the ICs in series?

i was assuming that being off small engined rovers the ICs would have smaller stubs than the outlet on my big turbo. but they're the same.

basically if i'm making y-pieces to split the flow, the one inlet and two outlets on each y-piece will be the same diameter, which looks all wrong to me...

[kam-325i]

There will be a pressure drop somewhere. Are you running them in series or parrallel ?

I would personaly run them in series.

[Turbo-Brown]

The flow resistance of intercoolers works in exactly the same way as electrical resistance:

Take two 1ohm resistors and put them in series and you get 2ohms worth of resistance.

Take two 1ohm resistors and put them in parallel and you get 1/2ohms of resistance, i.e. 1/4 of the resistance!

Now if we take the air flow to be current flow, with the parallel resistors, you can carry twice the current.

Know which I'd do

[Toby_Unna]

cool

so small bore piping out of the turbo and into the IC isn't an issue but getting air through the cores is where the resistance comes from.

parallel then. cheers Alex

[Toby_Unna]

sorted the TB today (just about!)







all ported and tapped some minor porting needed but it's just about there

just need to get a machine shop to skim the surface to make it seal properly... and make a plate to blank the original hole the other side!

[Ant]

Good work there M8

[Jon_Bmw]

You don't hang about anyone would think you want this done for christmas. Do you have a timescale in mind or just bits when you can where you can. Are you going to use any sealant on the metal that blocks off where the old throttle body used to be? Or gasket paper??

[Toby_Unna]

flat plate and gasket i think!
need to get a wastegate and BOV they're the main hold ups at the mo.

been looking at some on ebay US

this BOV
http://cgi.ebay.com/ebaymotors/ws/eBayI ... AMEWA%3AIT

and this WG
http://cgi.ebay.com/ebaymotors/ws/eBayI ... AMEWA%3AIT

need these ordered as they'll take a while to come!
still need a bloody manifold flange too!

[Toby_Unna]

timescale?

well the mag will pay me for a feature as soon as it's done - so the sooner the better!

[glenn]

toby,
you have pm.
sent the first without the pics, sorry

[Andy335Touring]

Good work mate !

My WBO2 has touched down in stanstead air port, won't be long now before we can do some home tuning on both our cars !

Is your MS fuel and spark ?

[Toby_Unna]

just fuel for now mate, if i'm right i can still use motronic for the spark. I think mark has this setup on his 325.

that was bloody quick with the sensor mate! might take a few days to get through customs though, and don't expect it to be free either

bastards!

[Andy335Touring]

Very, very quick !!!!!



No doubt i will get a tax/duty invoice from Fedex

[e30_Turbo]

just fuel for now mate, if i'm right i can still use motronic for the spark. I think mark has this setup on his 325.

that was bloody quick with the sensor mate! might take a few days to get through customs though, and don't expect it to be free either

bastards!

Mines on a std chip for sparks, much better than the wild one I had in it before. Just waiting on the bits for spark and I'll throw my std ecu in the shed.

One thing I have found and fixed over the last few days, my no'6 HT lead was arcing on the downpipe, causing awefull idle and sending the lambda into a fit, which in turn cut the fuel going in..... just watch for clearence as I doubt any of us have other than the std HT leads and mine seen to have lost it 's insulation on that one anyway.

Toby you need to set the LC-1 to the voltage range that MS can read, 0-5v, I can explain if needed.

Mark.

[lentec]

I know what you mean about that No 6 lead!
Mine was sparking out on the live feed to the ecu every time i gave it some boot the ecu would reset

[Toby_Unna]

update. slow progress due to weather

manifold skimmed and ready to fit



Silly Rover ICs junked (too much piping and the stubs were going to hit the floor on speed bumps unless I rewelded them!), so I've reverted to the original plan which was the big volvo IC. and it is pretty big

water rad



IC. stubs at lower corners which is ideal





cut up valance (not too much cutting actually)



tech 2 back on (and still fits!). nice and subtle



only have about 7cm between IC and rad to put a fan in, but hopefully will find something at the scrappy on friday.

finally have had more bits arrive from the states... AND THIEVING CUSTOMS DIDN'T CHARGE ME A PENNY THIS TIME UNLUCKY!

wastegate, blow off valve



manifold is not far off ready to be welded but i'm waiting on exhaust flanges now

And yes the megasquirt is still in its box in bits

[lentec]

Bloody hell toby that wastegate is huge
That will sound with an external pipe!

[Turbo-Brown]

Oh fair play Toby!

Can't beat going the whole hog

D'ya reckon PPC would do a thing on a collection of 'charged E30s?

[E30BeemerLad]

Toby, did the battery cable arrive Thursday?

[Ant]

now thats an idea !

all the DIY 'charger e30s in one article........

[lentec]

Im up for that

Allways wanted to get in a mag!

[Toby_Unna]

Already thought about that guys

they ought to go for that!

Would need to get the cars to the office in Tinwell (near Stamford) for the photography but could combine with a meet/race

only problem is i need to get mine finished first

Lee, cable arrived safe and sound mate. Thanks ever so much for using such a quick post service.

[Toby_Unna]

Bloody hell toby that wastegate is huge
That will sound with an external pipe!

well it came with an atmospheric dump pipe included which will bolt straight to the outlet

but i thought it might sound a bit odd/not nice? i'm sure it'll be loud though!

not sure, i'm a bit concerned it would make it sound like the exhaust fell off when it opens

[lentec]

Bloody hell toby that wastegate is huge
That will sound with an external pipe!

well it came with an atmospheric dump pipe included which will bolt straight to the outlet

but i thought it might sound a bit odd/not nice? i'm sure it'll be loud though!

not sure, i'm a bit concerned it would make it sound like the exhaust fell off when it opens

Not at all! helped a friend install one a while back.
Every time he reaches boost it screames!
They realy sound the knuts!!!

[Toby_Unna]

Hmm, better have a think about that then

no joy with thin fans at the breaker but i've cut a few more bits of valance off (!) and now have a good 7.5cm to play with between IC and rad, easily enough for a Kenlow or similar.
Also did a trial fit of the IC charge pipes and they both just clear the radiator edges, so game on!

as an aside, the breaker i use has just got three lorry tractor units in, all with fcuk off huge garrett turbos on - t4s by the look, a/r 0.75 on the cold side was all i could see, they're a good bit bigger than mine

unfortunately i'd guess that being from diesels they're no good