DixieTheKid

iTrader: (2)

Im after a little info please as i've started on my YB lump which i want to see close to 400bhp. If the engine builders / people in the know would cast their eye over this please and tell me if im going wrong or have missed anything it would be gratefully appreciated.

Spec:

Bottom End

205 Block
Std Crank
Std Rods
Std Pistons
Std Flywheel
Std sump and baffle
New Main & Big end shells
New rings

Oil pump is being checked, but to be honest ill probably just replace it.

The above will be going to woodmill engineering for the block to be pressure tested, assembled and balanced next week. Should i get new main and big end bolts?

Head

Std Head - Polished ports
Std Cams
Std Valves - Re-seated
New Stem Seals
Currently Std valve springs - Should i change to double?
Advised to use Std head bolts
What Head gasket should i use? Head is 139.1mm but i may have it skimmed (im waiting on an answer), block 207mm

Forced Induction

4x4 Polished Inlet Plenum & Trumpets with spacer
4x4 Exhaust Manifold
T34 .63
Grey 403's or Black 55's - which ever i find first
Airtec RS500 style cooler which i want to order, but what size core and outlets do i need?


Thanks fella's

v man

Go for double valve springs as they rev nicer

Small turbo escort cosworth head gasket

Arp bolt set
Standard head bolts

2wd exhaust manifold as 4x4 ones are shit

DixieTheKid

iTrader: (2)

Thats my problem, my 2wd head has the mount cut off of it

I have no idea why, like it when i bought it.

Thanks for the advice

fraser9764

iTrader: (3)

Bullshit.
If anything they help improve spool up, and are not restrictive at 400bhp, mine is doing over 500 on a 4wd manifold.
Use whatever exhaust manifold you have available

jamie956

Just had a similar spec built at scs, they advised using a 205 block and std head gasket would be pushed at 400, if your paying out for a rebuild why not future proof your self, 200 block 6 long stud and metal head gasket then you wont have to cross your fingers every time you but ya foot down.

fraser9764

iTrader: (3)

Go for the biggest core intercooler you can afford, but keep with standard 63mm (iirc) in and outlets.

DixieTheKid

iTrader: (2)

Ive got loads of 205 blocks and not the money for a std bore 200 block. To be honest the money 200 block make these day i would rather bit the bullet and go to burton's for a alloy block.

sharky584

as above mate multi layer head gasket with arp head bolts.
the porting on the head is a must to see 400 are you going external wastegate?
everything else is fine cant remember what cams i used but can find out for you.
uprate your clutch aswell and cooling system and use a good breather system from both sides of the block.

DixieTheKid

iTrader: (2)

Cant go external wastegate with a 4x4 manifold can i?

Ive gone for a 4x4 water pump and housing. 50mm core alloy rad. The enough do you think?

I was going to breath from both sides of the block upto a catch tank, think thats the same as you have done it?

sharky584

yeh dont think you can with that manifold but sure someone on here can verify that.
i changed from 50mm to 60mm core rad in mine and a 60mm turbo cooler coz they do run fookin hot and it was a massive improvement.
yeh my breather is both sides to seperator then to catch tank return to sump.

DixieTheKid

iTrader: (2)

So i should grab a set of

These
And these?

sharky584

yep defo mate and flywheel bolts.

DixieTheKid

iTrader: (2)

Sweet, thanks for all the comments lads. Keep em comin'

botters

iTrader: (2)

you dont need a ported head for 400 but you will have to wring the turbo's neck!

fraser9764

iTrader: (3)

Agreed, head porting not required, and 380 is a more realistic target, 400 is a difficult figure to aim for. (awaits rsmatt with his dyno sheet )

cossie daz

Who you going to get to set the car up ??

Ask there advise as they will tell you mods .

380 on that set up roughly , a t34 won't last as long as you think at 400bhp . Some will say t38 to 400 + bhp .

DixieTheKid

iTrader: (2)

I dropped tony a pm the other day and he was talking about a t36. I've heard of a t38 but not a t36. I'm interested in this.

sharky584

Paul500+

iTrader: (1)

t34 will be on its arse a 380/400 go with a t38 if you got a t34 send it to vince at crturbos he will spec it to a t38 will run 400 all day long and good for 450 if you wanted it, would also put a ABO7 inlet cam in

pduane

Whats the spec of this engine?

matthewpickup

what the cost to get the t34 .63 to the t38 spec? as when mines dies i would just upgrade it

matthewpickup

was the t36 not built for the focus ?

Paul500+

iTrader: (1)

best to ring vince at crturbos m8 i carnt remember iv spent that much on different things, its down to turbo condition as well

sharky584

205 block standard balanced internals t34 63 44external wastegate greys 3bar map light headwork i think they were bd16 cams.had custom inlet and exhaust manifolds made.

sharky584

hes the man to talk to for turbos for sure.

Paul500+

iTrader: (1)

must have add pocketed pistons with bd16 cams
carnt see how bd16 cams would work with this spec ?

sharky584

yeh pocketed pistons harvey gibbs said if it had more headwork it could have made more but i only wanted 405.

matthewpickup

as above i was told bd 14 / bd 8 for around the 380/400 spec and thats what i will be using

jimhc

iTrader: (1)

i have polished ported head bd10s T4 turbo greys coolerford motorsport pistons? this is all according to reciepts from last owner and was pushing 350 but fuel pump was getting tired was told i should reach 370 once fuel pump is changed seems low compaired to others?

matthewpickup

that turbo is good for 500 bhp with the right others parts
044 fuel pump?

botters

iTrader: (2)

with a t4 should be more like 470 lol

jimhc

iTrader: (1)

can you use a 2wd ecuwith that power?

sharky584

yes mate.

jimhc

iTrader: (1)

what spec of chip would i need to run more than 370

sharky584

you really need to talk to a tuner to get the best result have it mapped job done.

matthewpickup

msd do off the shelf chips for 380

matthewpickup

as said rolling road is the best set up

jimhc

iTrader: (1)

i think ill need to buy a unground crank to have more fun haha

jimhc

iTrader: (1)

as im from scotland tuners up here are scairce. and i only go to 1 tuner i trust and his usual cars are evos(RUSS) at performance hq. do you get a chip to the spec you want i.e 400 410 420???

matthewpickup

i think if you called msd and told them your spec they could send you a chip mapped to suit the spec or bhp if spec allows but it will never be as good as a car thats been on the rollers , i am going to buy the 380 spec chip ..run the engine in then take it to msd to get set up as you said theres not many tuners in scotland for cosworths