E30 Zone

been busy shopping this week. i have bought all this stuff so far and and ordering a split pulse tubular manifold from pure perfomance at the moment. im gona get all that lot on and sort the exhaust and intercooler pipes etc. then im goin on holiday to sweden for a week. im taking my van and my m20 engine. while im there pure perfomance are gona get the block sorted with forged pistons etc.

2 months and i will hopefully be sorted!!!!

cant wait!!!



pic of my turbo hybrid T70



MY TWO EXTERNAL WASTEGATES FOR MY SPLIT PULSE MANIFOLD!!!



PIC OF MY BOV AND RRFL. DONT LIKE THE BOV THOUGH



MY KOOL OIL DRAIN ADAPTER FOR THE TURBO SO I CAN USE EARLS AN10 FITTINGS. GOT 1 FOR THE SUMP ASWELL! ONLY Ԛ£13 EACH DELIVERED



MY DUMP PIPES FOR OPEN WASTEGATES

Looking good!

Andrew

Always good to see another blown m20 in progress. Got some nice bits and pieces there
Jon

oooooh some very nice bits you got there mate

thanks ppl i cant wait!

That is a great big turbo!

What sort of boost you planning on running?

Looks like you're building a bit of a monster there

I have turbo envy, mine would fit inside yours!

How much are the low comp pistons then?

I've found a company in the US that will make, ship for about Ԛ£500, but I'm gonna wait till my std ones are causing me issues.

Also what type of management are you using?

And good luck too, it's more than worth the effort!

Mark.

im planning on running about 20psi the turbo is meant to be able to boost 30psi+. yeh my pistons are coming from america, they cost about Ԛ£500 delivered with welded rings. if it interests you fozzy i can get 1 more of these turbos for Ԛ£300 delivered! and the hks wastegates cost me Ԛ£150 the pair usally retail at Ԛ£300+ each

for the time bein im using a unichip with maf and unichip boost module.

fozzy did you use metric blues or arp????

TONS OF LAG-TONS OF POWER

E327UKL wrote:im planning on running about 20psi the turbo is meant to be able to boost 30psi+. yeh my pistons are coming from america, they cost about Ԛ£500 delivered with welded rings. if it interests you fozzy i can get 1 more of these turbos for Ԛ£300 delivered! and the hks wastegates cost me Ԛ£150 the pair usally retail at Ԛ£300+ each

for the time bein im using a unichip with maf and unichip boost module.

fozzy did you use metric blues or arp????

TONS OF LAG-TONS OF POWER

Stop offering me bigger turbos please

I'm currently going thorugh which bolts to use, I've found some in the states, the metric blues but...... (Y is there always a BUT )

I went to a well known race company today and they suggested a stud conversion , I know the guy is talking sense, but I doubt I can afford the work he's going on about, so I guess I'll just go for 12.9 grade head bolts, either ARP or Metric, just not bought any yet. I'm still running everything stock in the engine for now, just starting to put together the bits for stage 2. So far I almost died at the cost of a uprated head gasket, so may just use the 12.9's and stay under 8 psi till I get a uprated gasket.

I need to get some soon as this weekend I'm swapping heads and I don't want to be swapping head studs/gaskets again soon if I can help it.

Whats the A/R on that turbo then?

Mines slightly bigger than a T3, runs a GT series based hybrid setup with a T3 flange, the only way I'll know what the specs are is by taking that apart and again I can't be stripping that down just to find out, having far too much fun at the mo From what I've been told my turbo will handle 16psi all day so that's more than I plan to use for a while, aiming for a fast and reliable 8-10 psi.

I have a internal wastegate and as far as I can see I just don't have the room with my manifold to have an external one. Maybe if I buy one of those pre-made manifolds I can, but the custom one takes up too much room.

It will be good to see how the unichip fares with all that extra information to use/sort etc, I run MS and it's really very clever, easy to use and has sooooo many functions, like traction control, if I ever get round to mapping that part that is.

Keep us posted on the project, so nice to see other future boosted e30's

i think im gona go with blues! only Ԛ£50 delivered

as far as head gasket goes im gona use the mls they rave about on e30tech. im gona thicker on the head gasket as im using 8:1 pistons and i want to run 7:1

the turbo specs are: SHAFT & WHEEL TRIM 64.5mm

COMPRESSOR WHEEL SUPER 70 60.5mm

TURBINE HOUSING A/R .84

COMPRESSOR HOUSING A/R RATIO .70

is there any 1 in this country who dumps there wastegate?

E327UKL what does the unichip boost module do? retard the timing by a certain amount? I have found it hard enough trying to get a small turbo to run ok boosting up to 5 psi with standard management and i'll think you'll struggle with anything over 12 psi. But if the unichip boost module gives you control over fuel and spark then i guess you are sorted.

Just haven't heard of it before and am being to lazy to search for it, you'd think us students wouldn't have anything to do.

Those wastegates are a proper bargain, must be well chuffed with that find!

I don't think ant or fozzy or even deano dump their wastegate, will stand corrected tho, they are supposed to make an outragous(spelling?) noise!

Are you meaning dumping the wategate to atmosphere?

If so then no, both Ant and I have internal gates, so no choice really. I think Deans is the same, he has a tiny T25 on at the mo, but for it's size it sure does go well.

0.70 a/r should be really good strapped on a 2.5, I think mine is about .55-.60 so it comes on full about 2.5k and pulls round to 5k, not gone past that as I'm still sorting airtight issues out.

Due to the fact I'm on std compression I still get good off boost performance so I only notice a difference once 2.5k is passed.

Jon, take the plunge dude, order you MS, I'll send you a copy of the map and your away, I know a man in the UK that you can buy from too

ive heard theyre meant to be excessivly loud! IM RUNNING TWO!

i dont know to be honest with you but ive spoken to a couple of top tuning company who said it would def be ok under 15psi. but unsure at higher. i will run standalone on it eventually just not at the mo, got enough to be gettin on with at the mo and gota pay the bills!!!

while im here anyone know anything about welding diffs????

7:1

Holy crap that's low!

My dad's car is 8.5:1 (I think) and I found it almost impossible to drive smoothly so shite was the throttle response

Fait play though, that's one serious setup you've got going on there

What's all this stuff I keep hearing about "metric blue" head bolts?

From what I recall, the standard Ԛ£10 I built my engine with were 10.9 or something (might even have been 12.9). Either way, the head ain't gonna fall off and unless they're known to be weak, why buy uprated ones? You can't do 'em up any tighter

They apparently don't stretch like normal headbolts Alex. Bmw changed the part numbers at some point, i think the bolts changed from hex head to star head, or the other way around. But at the same time they changed the fundamentals of the bolts too, so they now may be like the metric head bolts you get in the states??

I wish I could Mark, but just started Uni, freshers week is awesome, but severe lack of cash starting to set in!

if youre struggling at running low pressure on standard management have you thought about using a boost retarder? we run 1 on a twin turbo 3.2 cologne in a cobra kit car and thats 380bhp. the boost retarder works great!! and cheap!

as far as head bolts, yes you can torque them up way more! some guys on e30tech have proved that 1! havent heard a bad thing about them yet!

if youre struggling at running low pressure on standard management have you thought about using a boost retarder? we run 1 on a twin turbo 3.2 cologne in a cobra kit car and thats 380bhp. the boost retarder works great!! and cheap!

as far as head bolts, yes you can torque them up way more! some guys on e30tech have proved that 1! havent heard a bad thing about them yet!

Not too concerned about the ignition timing as I've got an Emerald and a MAP sensor to take care of all that

What sort of CR is the Ford running?

Seems you like your turbos

Jon_Bmw wrote:They apparently don't stretch like normal headbolts Alex. Bmw changed the part numbers at some point, i think the bolts changed from hex head to star head, or the other way around. But at the same time they changed the fundamentals of the bolts too, so they now may be like the metric head bolts you get in the states??

I wish I could Mark, but just started Uni, freshers week is awesome, but severe lack of cash starting to set in!

I asked the guys at bavaria car in Oz ref headbolts, this is the reply:

Hello Mark,

regarding your questions the standard head gasket and earlier style head bolts (not the later style torque to yield bolts) have
proven to be sufficient for many of the turbocharged M20s we have build over the years. These are road driven cars running up
to 20 psi and producing between 360 to 400 bhp at the engine.

Good luck with your project.

Friendly regards
Erik Gattermeier

So as I doubt I'll ever see 20psi, I guess that sorts that out then

fozzymonster wrote:

Jon_Bmw wrote:They apparently don't stretch like normal headbolts Alex. Bmw changed the part numbers at some point, i think the bolts changed from hex head to star head, or the other way around. But at the same time they changed the fundamentals of the bolts too, so they now may be like the metric head bolts you get in the states??

I wish I could Mark, but just started Uni, freshers week is awesome, but severe lack of cash starting to set in!

I asked the guys at bavaria car in Oz ref headbolts, this is the reply:

Hello Mark,

regarding your questions the standard head gasket and earlier style head bolts (not the later style torque to yield bolts) have
proven to be sufficient for many of the turbocharged M20s we have build over the years. These are road driven cars running up
to 20 psi and producing between 360 to 400 bhp at the engine.

Good luck with your project.

Friendly regards
Erik Gattermeier

So as I doubt I'll ever see 20psi, I guess that sorts that out then

from my limited research into turboing... thats bloody impressive for stock gasket and hbolts at 20psi

the lure of the turbo is strong!

it is a strong lure!

maybe but im going bulls out on mine and for Ԛ£50 delivered its a lot easier than doin the head gasket or a snapped bolt. plus if you really want to you change from standard ones to blues by changing them 1 at a time im rebuilding mine so i wont get to try this

does any of you lot know if m30 head bolts are the same as m20? if not do you know the thread details??

E327UKL wrote:
does any of you lot know if m30 head bolts are the same as m20? if not do you know the thread details??

I don't know how this compairs to an M20 head bolt but i took these measurements from an old M30 head bolt

shaft is 12.3mm by the bolt head then goes to 10.75mm for 90% of the shaft length
17mm hex head
11.8mm thread diameter so that makes it M12 ? thread pitch is 1.75
162mm long

HTH

Andy