Chris69

With decent management and cooling etc how much psi could you run through a stock 2litre blacktop in a focus?
just wondering if you could run say 3/4psi using a focus RS manifold and turbo just to give a n/a blacktop a bit more go?
Or is any positive pressure on a standard compression blacktop not a good idea?

crazycage

the pistons wont like boost and high comp.
p-s i ran 10.3.1cr and 20psi boost on my st170 turbo there was no margin for error tho and i would never run that sort of cr again

robp-tt

iTrader: (1)

my mate use to run 7psi on a completly standard focus black top, it had a focus rs turbo and manifold and charge cooler system, on standard managment, went well but ended up melting a pistion and blowin it,he run it for about 3k miles ok untill a long 120mph + run down the motor way and it blew up

Rs1

iTrader: (1)

There was a zetec na/turbo build done in turbo magazine ages ago, they managed to get just under 1 bar(cant remember which turbo) which knocked it upto 270hp. They only mod(bar the obvious) i can remember needed doing was the inlet was retarded 5,6, maybe 7 degrees.
If the afr's and egt's are in check i dont think that is pushing it to much. The mapper will know best though as he will be able to find where det is and dial in a certain amount of safety margin. The bigger the margin the less power your gonna make.....but then to little ignition is going to put too much heta into it, double edge sword,lol.

Chris69

sounds like it maybe ok running no more than half a bar or something- would see a solid 200bhp from that anyway i reckon.
mapping would be the big point I spose- nice and rich lol

Lambchop

iTrader: (1)

standard?

or are you american?

wirralphil

What headers you using bro

Mr.T

0,5 bar on std management should be no problem. But i would use an AFR gauge tho. You never know.

pani_k

iTrader: (1)

Blacktop 2.0 zetec has decent internals, good enough to take up to 200-220bhp reliably enough. Might want to bung in ARP rod bolts though but should hold together running around 200.

Chris69

yes, standard- well done for working that one out
and no i'm English, thanks for the contribution

Chris69

It would be mapped and setup properly not on standard management just wondering how the blaxktop would hold up or whether it would be very short lived at standard compression?!

Chris69

that was my thinking- could run 200bhp or so before doing a proper build to run more power etc

Mr.T

Well if you have the money to get a management why not get a spare blacktop and rebuild that?

EDIT: Or get a decompplate so you can run more boost.

crazycage

as above with a de-comp plate and some valve springs you could run upto 1 bar reliable

Chris69

simply thinking about a future project mate and a way i could do it in stages- proper build etc would come later along with other things but i'm not in a position to just chuck money at fresh builds with a great spec outta the box etc.
don't wanna be messing about with decomp plates hence the question.

Mr.T

Why not the decomp? Its not expensive and is way better then std CR. But then again when you don't want to spend the money... I am going decomp on the 2i of my wife and use std management. with about 0.5bar. Nice low CR and safe.

zetecdan

i'm running a tad over 200bhp at 7-8 psi on my sc'd 2 ltr blacktop mk2 mondy (zetec) with stock internals and a unichip. had no issues and done around 17k miles.
i just upped the boost yesterday have run it up to 9 psi at around 5k rpm so should see 10-11psi at redline but havent taken it there as the aux belt needs replacement.

Chris69

running less comp and only 0.5 bar, now see i can't see the point in that but tbh i don't like decomp plates, just personal preference.
money would be spent it would just be on other things and in stages just wondering how well the standard engine will cope with some turbo pressure.

Mr.T

Not going any higher cos i don't want to change injectors. They don't fuel enough for 1bar i geuss.

steve7786

iTrader: (2)

How will the standard ecu 'see' what boost is going in to the engine?

Mr.T

Via the MAF sensor. Its not messuring boost but the amount of air thats going in. It works fine. But i think the injectors will be maxxed out at 1bar or so.

Lambchop

iTrader: (1)

You're welcome mate

Nothing worse than people looking silly with their americanisms when they aren't american!

Chris69

Very true, i guess the important thing is you knew wot i meant and managed to help me out with my question......... oh hang on

Lambchop

iTrader: (1)

It was easier not to comment on the question as it's a crap idea

Red16

Thats it Chop... sit on the fence again why dont you

Lambchop

iTrader: (1)

Haha yeah because i normally sit on the fence?

It'd be pretty cool "boosting" along in your stock compression blacktop focus with your blow off valve whistling and having people desperate to know whats under the hood

Mr.T

Could be a cammed up focus

Gordon1

we did a black top turbo on std internals running 13 psi 2 years ago and its still all good

Mr.T

Thats 0,9 bar? Thats a lot. Is that on the stock eeh std injectors?

Gordon1

the engine is stock with omex 600 and rover inlet and coupe turbo injectors

Chris69

So spending X amount on a simple well setup turbo at low pressure with a view to using that setup for a better engine later rather than spunking loads on a N/a engine without any other route to go afterwards is stupid?

Chris69

sounds like a few have had decent results with a standard/stock engine thanks for the replys

delterflier

sounds so easy to do

cant wait to here about the results.

no trying to hijack but do ya think i cud do the same thing on a 1.8 black top focus?

got me thinking lol

pani_k

iTrader: (1)

1.8 blacktop is at a major disadvantage in comparison to the 2.0 mate. Reasons being:

1) Internals aren't forged and will not take as much power as a 2.0. Safely might be around 180bhp.
2) No under piston oil cooling jets.
3) IB5 gearbox is considerably weaker than the MTX unit. Won't like anything more than around 180ft.lbs.

delterflier

ow well cherrs for the info.

john

wirralphil

Is this right?

I know the old Silvertop 1.8 (130 spec) had under piston cooling jets but not the 105 spec.

Not clued up on the Blacktop's

Mr.T

You are right. Only he 130spec has them. The 105 is without jets.

Fudgey

iTrader: (4)

the 1.8 silvertop from a 130bhp xr3i or si did have the cooling jets.

but as they are only £4 each from ford and a sump gasket is less than a tenner, you may as well fit them lol

haz87

Chris, i thought this was the family wagon

Chris69

lol it is mate- It won't be the wagon if i decide to do it, i don't thnk so anyhow