My T4 project almost ready! Very excited.

[mitchyboy01]

Now the project is really coming together and we should be able to at least start the beast by Friday. Wideband lambda may have to wait til next week before it goes off to be mapped. I'm am lucky to have a friend with his own workshop/business who is a qualified engineer. He has done most of the hard bits for me at a very good price!!

Here is the spec:

Fully forged engine bought from Al115,

Engine started life as a B4194T, the strong 1.9 T4 block.
ACL race bearings.
Forged EM28v H-beam conrods.
Venolia Drag-R pistons.
Full race cylinder head with 3-angled valve seats, enlargened squish chambers, cut-back valve guides, and optimised valve timing.
Rebuilt oil pump with uprated seal and pressure switch.
S60R water pump with deeper impeller.
Uprated head gasket.

- Tim Williams Custom ME7 exhaust manifold, 1 cylinder chopped and welded to fit the T4.

- Holset HE221W turbo, maybe not big enough but at the price I got it I will give it a try! I Usde a T3/T25 flange adaptor. Hardly any info on this turbo and I've heard figures from 300bhp to 400bhp from guys in Finland. Here is a link:

http://www.taloyhtiot.org/turbohuset...100&Itemid=181

http://www.turbotec.com/henkiloautot...tot/bmwrox.php

- Garrett actuator from a 200SX with custom bracket. The holset actuator didn't start to open until 2 bar as they run 2bar from factory. I'm hoping to run 2 bar eventually after the inevitable teething problems.

- Inlet hosing to the turbo modded to fit the bigger compressor inlet, MAF pipework may still need modding yet.

- DMF to SMF conversion.

- New 850R clutch and pressure plate.

- Siemens 630cc injectors (will fit just before Unichip mapping).

- Custom huge alloy intercooler which ran over 400bhp on Ashoks T4. Was a straight drop in so no mucking around with pipework. It looks almost double the thickness and 40% longer.

- Full 3'' JT tuning decat exhaust with 1 silencer, wideband boss, post cat lambda spacer and modded downpipe for the Holset flange.

- Adjustable FPR.

- Return line added to the fuel system as T4's tend to lose pressure over 300BHP apparently. We have modded a T5 rail by chopping it and having a boss TIG welded to either end.

- Unichip Q+ to be fitted and mapped when/if we get the car running this week.

- Full MOT done a few weeks back.

The car looks 100% bog standard from the outside. My only plans are slight lowering with coilovers and a brake upgrade. Unless you know about cars you would think under the bonnet was standard too. Should be fun!!

I will do my best to get to some meets when it's done as I'm itching to put some faces to names. I will keep you guys posted.


Mitch.

[stu_850t5]

Jesus! You got a diff?

[mitchyboy01]

Nope LOL, the missus has had enough and I promised not to spend on it for a while as we're now broke lol

[Jamest5r]

Nice

Hope to see you at one of the 1/4 mile meets.

[mitchyboy01]

I will definitely be attending some this year. Never done it before so should be a right laugh!

[Jamest5r]

I will definitely be attending some this year. Never done it before so should be a right laugh!

It is mate and strangley highly addictive

[bigrotch]

That's abit of a animal u got there dude.. Hope ya got some new underpants for the first couple of runs lol

[mitchyboy01]

That's abit of a animal u got there dude.. Hope ya got some new underpants for the first couple of runs lol

lol!! If it's not an animal a Holset HX35 is going on haha. I chose my turbo as it's supposed to spool extra quick and still have good top end boost. I'm not a massive fan of lag but I also like big power so I'm hoping to get the best of both worlds! We will see.

[Jamest5r]

You started this yet mate????? hope all is ok i know what total rebuild's are like lol many a small problem.

[mitchyboy01]

It lives! Had a mare though today. Took it out for a test drive and it was cutting out on boost. Read codes and got MAF, lambda sensor and idle control valve. Changed MAF, lambda, plugs, coils but still the same. Checked all wiring and fuel lines which were all good. Turned out to be my eBay adjustable FPR. Swapped it for a cossie one and it's loads better. Still don't have car back though as I think we fecked the icv by cleaning it and I had to give the FPR back to my mate. Got another FPR coming in the morn. Anyone got a spare icv I can buy?

Turbo seems to spool ultra quick, I mean a bit too quick, I'm not sure it will be man enough but we are still to test it properly. It makes a bar by 2500 with actuator fully wound out and would prob make even more! Think the waste gate is sticking a bit so will investigate tomorrow.

The engine was very tappety at first as engine had been stood over a year but the quietened down quite a bit after a drive although still slightly audible.
The turbo sounds awesome while spooling and I removed the DV so gives a nice chatter now.

The 850r clutch and smf engage nicely with good pedal feel.

We have had no leaks or smoke so far (touch wood).

Looking forward to getting it mapped now once the other issues are sorted.

[Al115]

Excellent! Bet you are really pleased to see it coming together!

[Al115]

Traction-wise... you've got suspension, geometry setup, a diff (when funds allow), and some sticky tyres in the pipe, right?... right?...

[mitchyboy01]

Erm......Not for a while, just coil overs left in the budget. I'm sick of overtime so the rest can wait. Not bothering with a diff but will def get the brakes done.

[bigrotch]

if its the same icv as 850 t5 ive got one mate pm me

[Jamest5r]

Nice one hope the rest of the shakedown goes well

[mitchyboy01]

if its the same icv as 850 t5 ive got one mate pm me

Haven't got a clue mate, I'll try and find out! Thanks.

[Al115]

ICV... 99% sure I've got the one that came off the engine, mate.

Checking now.

[mitchyboy01]

ICV... 99% sure I've got the one that came off the engine, mate.

Checking now.

We used the inlet mani from the old engine as it had a different ICV Ithink. Didnt realise there are 2 different types. Ill find out which type I need 1st. Thanks mate.

[Al115]

Yes there are two types, one longer than the other, IIRC. The one I have is the shorter one (I've thrown two of the others away though!!! grrr).

[mitchyboy01]

Yes there are two types, one longer than the other, IIRC. The one I have is the shorter one (I've thrown two of the others away though!!! grrr).

I think I need the short one, will try and give my one another clean tomorrow and double check which one! Thanks.