after seeing the motors at croft it has spurred me on to sort the yb in my 3dr.
what i`d like to know is if i get my head ported etc,fit my t34 (rebuilt with a 360` and 48mm),rebuild engine,get some greys or seimens blacks.
is it worth getting some adjustable verniers and forged pistons and conrods now or when block is stripped down (i intend getting all parts over a period of time as i`m not loaded (who is with a cossie?)) i also intend getting a closed loop lambda sensor with a l8 ecu (hopefully sorted from M.A.D.) probably before rebuild etc,

please help as i want to do it right first time,hopefully i am on the right track but i`m sure i`ll be told otherwise if not.


TA

 

If sticking with std cams I would not bother with verniers.
I would look at aftermarket ecu's and add up all the prices of a converted set up to L8 with coilpack etc, then you will see the price advantage of aftermarket, and then have the added advantage of a lot more featrures with most, as well as doing anything the L8 can do even when converted.
tabetha

 

tabetha just hates the standard cossie managment

Im going T2 on my new engine

verniers can be timed but only give a slught slight advantage.. not really worth while for the cost of them.. but if your chasing big power then every litte helps

 

The standard Mahle cast pistons are reliable to over 500bhp and so are the standard rods, so unless you're knocking on 600bhp I wouldn't be too concerned. Long-studding would be a worthwhile investment.

 

dont waste your money on forged stuff, the standard internal will cope with 450-500bhp, thankfully from factory the YB was over engineered for the small bhp it was putting out

if your on a budget imo i wouldnt bother going for after market management

if your only using a t34, L8 and standard internals will be more than enough

 

 

decide what bhp you want first then spec your engine from that; a t34 with the biggest housing (.63) is only going to give you approx 380-400, so standard head and cams can achieve this quite easily

as a guide my engine spec is

t34.55 -31 actuator
55lb blacks
rs500 cooler
standard engine & head
msd chip

and with this spec i'm expecting between 350-380bhp

 

 

what power do you want to acheive?

 

 

you will need your head porting not esential but wise.. and everything else should be fine.. it all depends how deep your pockets are..

im having a engine built to 450-460bhp.. with low comp pistons. polished n ported head etc

 

a t34.48 wont make 420bhp in my opinion

 

i agree t34 even with a .63 would struggle to make that power.

send it off to universal turbos and have it made in to a T38 then you can make that power no probs

 

 

try there website

http://www.universal-turbos.com/pturbos.htm

 

 

i think your slightly over complicating things here mate; a t38, set of greys or Siemens blacks, a decent chip, 3 map bar sensor, and a rs500 style cooler will make the power you want on a standard block, internals, head & cams

unless they is any specific reason why you want head work and cams? save you money, you dont need them for 420bhp

 

 

a t34 is the next step up from a t3, so whoever told you that you need to port the heads and change cams didnt really know what they are talking about

a t34 with the biggest exhaust housing (.63) will make around 400bhp'ish. It all comes down to how much you want to spend. a t34.63 wont be that laggy, it wont spoll up as quick as a t34.48 but you'll find a.63 will pull much harder later in the rev range compared to a .48.

dont go chasing numbers unless you want 420bhp for any particular reason; its much better to have a nice fast road engine.

 

 

assuming your mates type-r is standard a stage 1 saff will eat that! your car as it is will eat that alive!

greens will be OK to about 380ish
greys will do 430-450ish

your car with that spec will be able to make 320-330bhp no problem, dont get too hung up on the t34.

your looking at Ł400 for a 2nd hand t34, and more money to change the chip (get a decent chip as well, such as MSD) for an extra few horses, personally i would bother

depending on where you live; you'be be better off spending Ł150+VAT for a decent set up with your current spec at MSD or MAD

 

 

this quote is more realistic ^^^.... 420-430 requires light head work and on the limit of a T34... if not too much... for a 400-480 spec i'd say a GT30...

if your wanting 450ish i'd recommend pistons, rods, head work, oil pump, gt30 fueling to match as in pumps/injectors....

lets face it 400+ starts getting expensive run 400hp safe and just enjoy it imo...

 

for 450+ use a roller eraing t38

 

 

i've heard that greys overfuel only on idle; but not sure how true that is, go for siemens blacks 83lb (2.8ohms) $244.50, that way if you do want more power later on these injectors will cope no problem.http://www.fiveomotorsport.com/Injector_SetsMODS.asp

 

 

your getting ahead of yourself mate, dont need them for the spec you are running