E30 Zone

Iam looking to add turbo to 325 and would like has much info on this conversion, whats the best turbo? is their a DIY kit ? etc

Que Ant or Buster......

They are working on a turbo set up for thier cars.

What exactly do you want to know as i could bore you to death on doing this.
The turbo you use all depends on what other engine modifications you do or already have and what you are going to use the car for.

For a standard 325i ,i would say a sierra cosworth turbo for street use.
I am using a hybrid garret unit and Ant i think is using a skline unit.

Any more questions ,just ask.

u have acutally done a full turbo conversion on the 325i?

intersting. just out of interest what bhp does it kick out. and is the bloody thing driveable with that much power?

note - has anyone done this to an e30 m3?

regards

frosted

Full update on this in a couple of weeks.

I am curently building 2 turbo 325s, ones for lil old me, the other is a commission.

they are so close I can taste it.

only major headache has been heat tranfer into wiring etc and some fabrication with regard to charge hoses and exhaust downpipes etc..

ant u nutter!!

i haven't finished mine no,on with it at the mo.Progress is slow with all this cold weather.
I have all the parts just time, work,cold weather,lazyness,missus,booze are slowing me down abit !

so what is this likely to cost if I shop around and Purchase second Hand turbo, what other parts do I need?

Budget is unlimited, what do you want to achieve ????

Ingredients:

1, Turbo
2, Manifold adapter or manifold to suit chosen turbo
3, Intercooler, size dependant on what level of boost you wish to run
oil feed and return pipes to turbo, these have to be added dude, theres no provision on the M20 as is.
4, Boost dependant fuel pressure regulator( std unit works wrong way round)
5, charge pipes and silicone flexi boost hoses
6, custom fabricated exhaust downpipe/system
7, some method of fuelling the beast, ie aftermarket/piggy back ECU etc etc, there are other methods though.


thats the basic list, some brackets will need fabricating for sure and you'll need to be a dab hand on the tools. the oil bvreather system must be changed too as the crankcase will now be postive pressure and want to pour oil everywhere unless remedial works are carried out during the install.

You can get "off the shelf" kits but they are for LHD cars, will work with more mods to clear steering etc.

If you are local to me( SE/Kent area) you're more than welcome to come have a look/chat/cuppa whenever.

Hi Iam in hastings area so If I could pop over and have a look that would be good if you can email me paul@popupstands.com, i'am just about to fit new engine and exhaust so is it worth getting sall prep work done to make it easier to fit turbo at later date you don't fit engines do you, Iam picking one up tomorrow that I purchased off zone

Hey peeps. I have been contemplating the turbo idea for a while now...
Ive heard 270bhp is achieveable with not a huge amount of boost!

If i was to get my pistons machined to a lower compression, what else would i need apart from a turbo, pipes and IC??
Can one modify the boost valve??

I would also need to adjust the fuel...so a fuel pressure regulator yeah?

Any more info yould be amazing! as i would be looking to do it in the next few months

Cheers
Chris

Seems like a pretty pricey conversion then unless you're in the know!


Hmm... 2.7 turbo

Not with the eta crank Jimbo

I wont say what the R+D has cost me, I dare total it up

thing is, if you wanna turbo an engine that was NA from the factory there are several traps to fall into, one of which is wanting to much ..

Decide what you want from the setup before comitting to it, Ie low boost systems wil provide a 40% torque increase right from idle onwards due to smaller turbo , but if you want Swedish power levels you'll need to spend an awful lot on block upgrades before the turbo is bolted in place.

The goal for my setup is reliable, bolt on able power increases, not skyline quashing performance.

Watch this space..................................

We have a mob here in Australia building custom Turbo's in M20's, power outputs of around 380-400 bhp on a proper built engine (low compression, forged pistions ect). www.bavariacars.com.au

These guys use the eta crank and have had no problems over the many years.
524td or the harder cranks just arent available anywhere close to Australia, but the eta has also been strong enough.

just been reading this have a look

http://www.blackoutperformance.com/myth.htm

What do you think?

ant wrote: You can get "off the shelf" kits but they are for LHD cars, will work with more mods to clear steering etc.

Ant, would you happen to know where you can buy them? or do you have some sites that sell them?

cheers Sjoerd

Try: http://www.turbochargingdynamics.com/tcd_catal.htm

But at the prices!

Our old mates @ proturbo.fi have all thats required in stock.

site lists in english as well and prioces are not stupid either.

Proturbo recommended the GT37 turbo on their manifold with an intercooler of approx 3 litres capacity as a bolt on light pressure(6-11psi) install.

So thats what I got first, I have gained another setup since then which is kinda the same, but different in many respects.

here's a list of all the goodies I have secured so far...

T3 hybrid
Gt37 hybrid
3 litre IC
5 litre IC
20 litre IC
custom 6 into 1 tubular mainfold
cast 6 into 1 log manifold
oil feed and returns for both (rallye design)
Samco hosing etc etc

all the above is currently @ work awaiting the last few bits to arrive midweek or so, then I'm on the case for turbo V2.0 install

as you said to me Ant "it's got to be done mate!"

Hats off should be wicked when done!

I hope so mate, dont fancy egg on me face on this one , too much time and Ԛ£Ã”šÃ‚£ involved.

just been offer a Garrett GT40, will this be suitable for e30?

whats it come off dude, and whats the AR ?

Universal, GT40, 750hp, The comp cover is .50 AR and the wheel is 82mm

ignore last post this is tech details

The data the compressor read: 88mm, Trim 54, A/R 0,72 - the turbine has the following data: 77mm, Trim 73, A/R 0.94.

So if one had a standard 325 and wanted to get say 40% power increase (240bhp ish) reliably, with scope to go for more......How much would one need to do?

I have a pulsar GTi-R intercooler, would need to get hold of a garrett unit, and make sum custom piping etc...

Would one need a stand alone ECU for this? or could i use the current with a rising rate fuel pressure regulator?

Would i need to get my pistons machined?

Thing is, im not looking for stupid power, just reliable power that will enable me to beat most things on the road

http://www.e30zone.co.uk/modules.php?na ... pic&t=2649

Check the thread....all the answers you need!

Come and join the turbo crew......

I reckon you can pretty easily get away with around 6psi which should be good for about a 40% increase over standard (based on the pressure ratio calc). On a 171bhp 325i that should give about 240bhp and a similar 40% hike in torque.

There are I think other things you can do to up the power output without further increasing the boost. The standard inlet manifold looks pretty cruddy inside for example so a change to throttle-bodies may release another 5 or 6 ponies (that's a complete guess BTW) which would bring our running total to 249bhp.

Then there's the engine management. An ECU which can retard ignition relative to boost and provide appropriate fueling should reap benefits in terms of economy and drivability. It also means that you can junk the AFM and have the engine mapped on engine speed, load and manifold pressure.

In terms of cost, I picked up an almost new pair of skyline turbos (Garrett T25s) for Ԛ£200 on ebay. My ECU and various sensors was Ԛ£750. Mapping is another Ԛ£235 ontop of that. The intercoolers were about Ԛ£40 each for 2wd sierra cosworth ones. I'll be making the TBs myself so that's just the cost of the material.

Then there's the cost of the engine rebuild

So howz it going then turbo boys? Making any/good progress??

With regards to a turbo system, running with something like a t3 turbo, adjustable fuel regulator, and 535 yellow injectors, would a m30 air flow meter be beneficial? Would it realise more airs being thrown past it than an M20 one???

now theres another can of worms, suck through the AFM or blow through.
Both offer advantages/disadvantages, I have opted to blow through the AFM, the pressure both sides will be equal so it will function as intended, it should also be able to "see" the throttle being opened faster than being stuck on the end of a few metres of plumbing, ever tried breathing through a garden hose ??


Suck through will work and is favoured for big boost installs, again its a case of what, and how much are you willing to invest to get the desired results ?

Thoughts gents ?

have u ever tried blowing down a garden hose?

not an expert on turbo'd applications tho unfortunately

Ant,thought this might be of interest ?

ant wrote:now theres another can of worms, suck through the AFM or blow through.
Both offer advantages/disadvantages, I have opted to blow through the AFM, the pressure both sides will be equal so it will function as intended, it should also be able to "see" the throttle being opened faster than being stuck on the end of a few metres of plumbing, ever tried breathing through a garden hose ??


Suck through will work and is favoured for big boost installs, again its a case of what, and how much are you willing to invest to get the desired results ?

Thoughts gents ?

So what are you running standard m20 a/f/m or the m30 unit? I agree with what you are saying about the pressure, so surely it can't make a huge difference if its sucking or blowing.

M20 unit, might swop over to suck through and live with it, its an interim short term soloution as the emerald ditches the old tech AFM anyway, just need it to run , its not gonna be spot on, infact will set it to run rich enough to survive a few trips and the trip to emerald for its final fettle.

why you ask dude ?

Edit: Andy that ECU looks good, no info onsite as yet,will and discuss once its alive and kicking asuming its as fully featured as the M3DK unit and supports a map sensor, IAT and TPS/ 02 sensor that will do nicely.

its cheaper for sure and that goes a long wqy for me, I set a small budget for this conversion, not tight but spending mega Ԛ£Ã”šÃ‚£ and writing a big cheque for someone else to do the job for me did not appeal.

I am still absorbing both books you lent me and keeping them very safe, if you need them back just ask M8 OK, I appreciate the loan for defo

Well i'm collecting bits myself for this, and was offered a m30 a/f/m didn't know whether or not i'd need it. Got some yellow 535 injectors for Ԛ£25 the other day which i thought was a bargain. Its gonna be my spring/summer project and i am on a budget.

what you got so far Jon ?

what are you doing manifold wise dude ?