I want your opinions on what is deemed as a good balance between power delivery and outright horsepower for a road going Sapphire Cosworth.

The criterias that are important (to me) would be good driveability with as little lag as possible and top end pulling power. The car will not be used on track, so that is not of any concern.

Considering that the Sapphire Cosworth (at least over here) was marketed and intended as a sporting grand touring saloon car, I am curious as to what would be considered a evolution of that concept in the Sapphire Cosworth today.

Basically what I'm after would be a grand tourer that will be as at home on alpine mountain passes as it is on the Autobahn or in the city.

Hopefully the car would have in the region of 330-380BHP ?

So go ahead and come up with what you think is the ideal engine spec, and why, for this kind of use.

 

Standard Compression engine with a roller bearing style T34.48 on a Karl Norris Gunship style chip.

330bhp and would have great torque and make boost like a mother fucker

 

std engine (good condition) t34.48...........light blue or seimens injectors 30+ psi spike (depends on 2wd or 4x4 transmition)....holding a good 28-30 psi................fuckn mint

 

To be honest, cossierich setup rules totally, but not good for a std 4x4 gearbox tho

 

A T34.48, greys std cams std head std comp 380 all day long very little lag, when mapped correctly, don't bother with siemens.
tabetha

 

Good job mine is 2wd then. Thanks for the kind words mate

 

.........na not really.........the lad wants ultimate drivebility.........gt30 has more top end but a well speced t34.48 would be much better for the best of everything..

 

i wouldnt use greys again unless on a mappable managment or msd chip only

 

Ehh yes, but there is a HUGE difference in those 2 turboes, but u CAN get the gt30 to do the same as the t34, just dial the cams in for low power.
And if u say that richs isent drivable??
Then he might get a T25 turbo then

 

msd 55lb siemens kit ,t34.48, std comp, big brakes,

370-380bhp, 420lb/ft, 38mpg, no lag, no hassle,

ultimate fun...

 

Pete,

I have over 2 bar boost at 3700 rpm with my GT30 which is as good as a t34 and you can still pootle about off boost.

 

Mines is about that spec and it only returns 22mpg
But yes very drivable (4x4)

 

Yes m8 good for you
Ive done one 4 months back now with t34 bd12 inlet and 2wd manifold on an escos and it´s nuts, goes incredible fast, drives as a std stage3 car but keeps pulling to the end, SUPER cool setup, yours are just better cause of the turbo

 

DEFFO a t34.48 housing and take your pic on injectors, greens or siemens.

little bit of a spike and maximum driveability

 

im currently running std bottom end, compression etc, standard head, Greys, T3 turbo, 1.9 spike tailing to 1.7, NMS live map, gives awesome on road drivability, comes on boost sooo low down and has good midrange torque, although a T34.48 i think would make it spot on for the road to give a little more top end power, imo

 

......yes it sound v good,but u'd get 2bar at 3300/3400 on a 34.48............rich i'm not knockin' ur car,cos mine is at full boost at 3700 and it pulls to the end....like urs

 

you cant really go wrong with a T34 and greys tbh. but if youre after more then what rich has is perfect

 

i have a t34.55 on mine std engine apart from grp a h/gasket and running 20 psi on greens

now what more could i do with mine as it stands?

 

i have standard engine very slight porting,light blues T34.55 30psi spike 27psi in the midrange tailling to 23psi at the rev limiter at a guess would say around the 370hp mark goes ok being a 2wd!

out of interest is the gt30 a good turbo for a standard engine?or is there no point as a standard engine wont be able to consume(sp)the air a gt30 can supply?

 

If its response you want a GT28rs and suitable injectors would make for a very quick road car.

 

I suggest you have a Read of CossieRich thread about his car/engine.

 

my old one, was t34.55, 55lb blacks, 500 cooler, msd chip, standard bottom end and compression - 30psi spike and held 26/27, very very quick road car, i guess around 370hp

but it really depends on what you want to spend, i'm led to believe a t34 is cheaper than the gt series? likewise, siemens are more expensive than 803 greens

if your on a budget, t34.48, standard motor & compression, decent chip NMS or msd etc. 500 cooler or 4x4 cooler

 

I would read my thread in the resto room. Answers all your questions but i made 453 bhp and 417 lb/ft with a standard head and GT3071.82 turbo

 

ah yes but i am on a 205 block lol!!plus as i remember yours has a 4x4 inlet a spacer?

 

bullshit 38mpg, bullshit no hassle!

LOL

if it made anything like 420lbft (which it wont) the it would trash the transmission as it will hit with such force on a turbo that size. been there done that - on a t34 .55 peaking at 35psi @ 3500. planet gears in the diff and 3rd gear broke. 3.5k later they didnt break again. so hardly ideal !!

as for 38mpg - surely you dont really believe a 380hp road car will average that?!?!

 

you talking about 2wd or 4x4?

as for the MPG, i think you'd be surprised what closed loop can do, i know a few people who run MSD set up and get over 30mpg

 

whats max power you can safely run on a 205 block?

 

opinions differ - 450hp IMO, but i know jay. off here is going to run over 500hp on a 205 block

 

interesting!!

well mines totally std apart from group a h/gasket maybe next option would be to got for 63. on the turbo?

 

mine was a 3 door so rwd. standard t5 and standard 7.5" diff that broke.

as for the MPG, i think you'd be surprised what closed loop can do, i know a few people who run MSD set up and get over 30mpg[/quote]

theres 30mpg and theres 38mpg!

plus closed loop was never mentioned!

 

IMO i wouldnt worry for the price per BHP you'll achieve

firstly a new .63 hosuing is around Ł300, then you'll need to change your chip (as a guide i think i paid Ł325 for my msd chip)

you're is a nice spec for the road as it is

 

Thanks for all the input so far. Really appreciate it.

My Cosworth has been stowed away for over 3 years now... Have just regained an interest in it and am currently doing a little bit here and there. Nothing major at the moment. Plan is to slowly do some repair and fit and finish work on it over the winter.

It wont, and probably never will, be a show car but I want to have it in a good and reliable mechanical state and also to take care of the minimal rust damage that it has at the moment.

The engine and gearbox was overhauled 3,5 years ago, but since the car has been stored it's hardly been driven after that.

The turbo is the std. T3 at the moment and basically either needs to be overhauled or exchanged for a new or upgraded version. At the moment I'm still trying to figure out if I'm going for the NMS Gunship conversion (which I'm thinking about at the moment) or to go a little bit further and get a hybrid turbo, new injectors etc. Some of the specs on here sounds very good and I'm relly tempted about having a T34 .48, siemens 55lb or light blue injectors etc. and get a really driveable and powerful engine. I allready have a Escort Cosworth EEC-IV intake manifold fitted so the airflow capabilities should be adequate.

Even though maybe not the ideal solution, but would MSD, NMS etc have off the shelf chips for such a setup or would it have to be a live mapping session?

 

ok well if i stay with t34.55 would going greys and re-chip be good way forward?

 

i'm surprised that broke with that, mine was about 370hp with around the same torque and it got abused and never broke - people run more than that and have never had problems with transmission

ayway - we are wrecking this lads thread!

Matt

 

Standard engine, standard head, standard cams, GT3071 turbo, 400bhp should be easy enough and isnt laggy.

 

not really; what boost you running & injectors are you running?

providing you dont max out the injectors, you can safely boost/ spike to 2 bar (30 psi) and hold 1.7 ish

 

im running 20 psi on greens at the mo!

 

what does she spike at?is that 20psi at the limiter or all the way through the revs?

 

is that all ? well apart from going 4x4 inlet route of course,what sort of injectors would you need to run etc

 

could have been mine was on its last and that just pushed it over the edge. dunno. looking back now though i cant see how delivering 35psi within 800rpm can help transmission. 100lb ft to 400 between 2500 and 3500rpm is quite a kick

not really ruining it matt - experiences of breakages is a way to learn what not to do lol