_DAN_

In the passanger seat

richm

LOL @ some of the crap posted on here...

Steve knows the score, but hasn't explained it to those who don't understand.
Turbo's + carbs are no problem BUT the carbs need to be of a suitable type to deal with the boost pressure, mainly related to sealing the float chamber so that it gets pressurised in line with the venturis so the fuel is able to flow into the airtstream rather than piss out the top
Standard 45's will be useless in their normal state. As mentioned, Lotus Esprit used 45's (possibly Dellorto's rather than webers) but they are of the sealed design, and work just fine.

This is obviously only a small part of the overall job - mechanical issues like compression, piston material, etc need to be considered to determine if it is a viable option.. Slapping a set of 45's and a turbo on as implied, just won't be sensible.

Carlsworth

jim,...you really are a cock sucker.....



the guys 32 years old, had an xr3 when he was 20, loves them to death, and has bought one because of his passion for them,....

he is also a good engineer, and has been forman at many big dealerships in his time as a mechanic...

to say he has no understanding about how an engine works really fucks me off.....


the whole point to this fucking post you wanker, was to ask wether it was worth doing, as he has most parts just lying around....

i fucking hate repeating myself,....but have done 3 fucking times now.....

oh,...and twice to say your a fucking prick



edit,.....sorry i forgot to add, while being enraged by a particular posting,

c&b..holy shit SCA - 327bhp, PE - 315bhp) and 290lb/ft Torque and that was from a 1.6?????

Christian and Beccy

iTrader: (14)

Yes, a 1.6 with 8 valves and still using a standard head gasket/bolts and a standard crank.

Christian and Beccy

iTrader: (14)

....oh, and a standard exhaust manifold.

Paul_RS

iTrader: (4)

While i'm sure you could get the carbs and turbo to work with some fettling, would it not be easier to build a screamer of an NA engine instead?

Everyone knows turbos are for fruits

Carlsworth

very impressive

Tony Turbo

And standard rear drums


Did I mention that I had another person in my car, wipers and mirrors on and no taping?

Carlsworth

ok then,....

well,.....


after a discussion with him, hes not budging, and now wants to do it, just to piss on people s bonfires,...

maybe its a waste of money, but im pretty sure c&b would have been told that the power he wanted was better achieved with a larger capacity engine etc.....

anyway,....

so,...if anyone wants to lend their expertise, what does he need from start to finish to get it right,....

weve got
45's rejetted,......285 cam, solid lifters and roller rockers, oil cooler, turbo head with oversized valves etc, straight cut 5 speed, and beasty clutch, facet fuel pump, turbo pistons, turbo manifold, intercooler.....


owt else???



remember,...this is a project,...something to do in spare time,...its not about having massive power quickly,....that could easily be achieved,...so, if possible, sensible comments please....



thanks
carl

Rs1

iTrader: (1)

He needs to send the carbs away for a pressure conversion or buy/swap for a set already capable of taking boost.

Carlsworth

thankyou,..thats been duely noted, nd he will be taking carbs for whatever work needs doing this week....

Turbo Zetec

iTrader: (1)

take a look at the book 'tuning the 'a' series' by david vissard (sp?), i'm sure there's a bit in there about using different carbs (and how to adapt them) for turbo applications


best of luck to you, hope it turns out well, don't see why it shouldn't

EIL132

Exactly, love how the future gimps will never understand the past, Vizard was doing this before the aborted pregnancy was invented

Carlsworth

love how the future gimps will never understand the past



whos that aimed at???

Turbo Zetec

iTrader: (1)

the youth maybe? i'm only 21 tho

m.d.

there are normally sets of dellorto turbo carbs on ebay, i looked into doing it to my nova when it had a 2.1 8v in it, would have been piece of piss too as i was running dellorto carbs anyway,

all i would have done is ported the head combustion chamber to lower the compression (removes the problems caused by using a steel headgasket and 2 headgaskets, and saves the cost of getting a set of turbo pistons,)
MADforIT in liscard cornwall do the headgaskets to convert cvh engines to turbo too so may be worth asking them for one, think they were cheap as too,

anyway back to how to do it,
you will also need an injection electric fuel pump and a turbo fuel regulator, this works by on normal driving the reg takes the fuel pressure to low carb pressure. but it has a connection that you put a boost line to it, then when it feels boost it ups the fuel pressure thereby increacing the fueling to stop meltdowns, ive seen turbo cars with over 400 bhp thro carbs so you wont have a limit to the power you can ge to,

finally grab an rs turbo manifold turbo and downpipe and you have the full set up, job done. good luck with it, and ignore the bolt on people who try and stop us DIYers from having some fun

Carlsworth

EIL132

The gimps that think it hasn't been done/tried before by vastly more experienced tuners or think using carbs is a non starter on turbocharged engines

Stavros

Or to sum it up quicker.

Jim

Jim Galbally

no no no no n

ok lets look at what you've got

twin 45 webbers great, now take them to a carb specialist and get them modified for boost + full rebuilt, shouldnt cost more than about 300quid

285 cam for an XR3
throw that in the bin, you're better off with a standard one, profiles will be all wrong for a turbo car

turbo head
it's the same as the XR3 one but if its modded then great as long as it aint skimmed to f*ck (like a modded XR3 head would be) as then it'll be useless

oil cooler
great, but wont help with anytihng to do with the turbo bits and bobs

str8 cut box
will be WANK in a road car (imho) and i'm guessing it's got an LSD?

facet fuel pump
yep, need that bit

turbo pistons
standard new ones? i asusme you know you'll have to rebuild the bottom end so youll want new rings, bolts etc. etc. shouldnt cost more than about 1k, CVHs are cheap

turbo manifold
great you'll need that, best to stick with the normal T3 tho, not worth feckin about with anything else

rst intercooler
bin that STRAIGHT away, it wont cope with a STANDARD car, theyre really not worth a wank!

bits you'll need:
custom made plenum
custom made inlet manifold
custom made linkage
custom boost hoses/pipes
RST exhaust
semi-decent intercooler
rst radiator (your XR3 one wont fit with the cooler)
a box that wont annoy you after 3 minutes driving
bottom end rebuild bits and bobs
cam suitable for turbo (anything other than an XR3 aftermarket one)


starting to see my point a bit maybe? an RST conversion can be done for less than the price of getting the carbs rebuilt

Turbo Zetec

iTrader: (1)

no harm in trying to throw something together for no money though is there? who says he cant modify the carbs himself with a little bit of 'the right knowledge'? semi-agree with you on the cam though jim, although it depends on how wild it actually is. one of my mates has an ERST with a kent cvh22 cam in it and it worked just fine

edited because... i cant spell

Carlsworth

which is most definately not me.....
i know its been done countless times before, and that it WILL be expensive for the gains,.....however,...thats not the point/....

lawnsy

iTrader: (1)

I bolted a t3 turbo and intercooler onto my xr2........ I made a chamber to go ontop of the carb, changed the second choke to manual, put a fuel pressure regulator that works off boost in the fuel line with fuel pump, had a bit mess about with the jets and it fucking flew and it beat my mates rs turbo which was not standard so it can be done...................just set the fuel pressure i few psi above boost pressure to allow the carb to work and thats it..............................oh and drill the sump for the oil return for the turbo ..ill try to find some pics for you

Stavros

Straight cut box is ok, dog boxes are annoying but he dont say it is one, the whine of a straight cut is ok.

If he having a decent intercooler then the XR3i rad is fine, as it wont be in standard shit RST place.

no need for custom inlet, as there twin carb manifolds available, side and down draught. obv need custom plenum tho.

could use 285 cam, but be a lot nicer with a standard RST one, aye

with the right info, can easy rebuild carbs yourself for peanuts, ive done loads in the past.

need a rising rate fuel pressure reg, but one that goes low enough for carb pressure, most injected ones wont, but easy buyable.

its not too hard or expensive TBH for anyone with a bit of mech skills.

Turbo Zetec

iTrader: (1)

just remember, you can steal bits off other turbo/carb cars that will help you


itsmeagain - by the quote in your sig... would i be right in guessing you're competing in eurodrift this year?

Keith B

Some of the first turbo cars had the carb BEFORE the turbo - must have been a fair few issues with that !!!

Using a standard bottom end you wont be able to run much boost due to the compression of the XR3 relative to that of an RS Turbo.

DanRSturbo

And with the standard RST intercooler, your looking at 17psi max boost. ACT guage will be needed to monitor temps.

Bernie gearbox is the top answer for transmission, with a b&m shifter, and an AP clutch.

Good luck with your project.

And this is my car, which is in Performance Ford this month on the rollers

Rick

blow through and suck though - it's benn done loads of times

Benn 304R

how do you know i blow and suck

DanRSturbo

I thought about making some sick referance to you Benn, but I thought I'd let you have the pleasure

Benn 304R

AndyRST

FPMSL @ where this post is going

TBH im with Jim there is no point to cobbling together a turbo fitting to a XR3 engine, when ford have already done the job for you. A complete running RS Turbo engine would cost less than the half the bits needed for XR3 turbo conversion, so the argument of "bolting on a few bits for no cost" just doesnt work.

If you want to do it to be different, then thats a different matter

m.d.

a custom plenum is not needed as you just get an airbox for webbers and seal it for a turbo application,

a custom manifold?????? webbers have been fitted to the cvh engine for years so they are available all over the place, i got one for 25 quid,

the piper 285 cam will be ok but you will do well to make or buy an adjustable cam pully as it may need retarding a little.

pistons as i have said are not 100% needed to lower the compresion for a budget application, 1000s of times a headgasket spacer as ive said is perfectly acceptable,

also a carb rebuild kit is 20 quid a carb and anyone with a little knowledge can do it, the sealing is not that hard to do either ive heard,

if you have an rst intercooler about then itll work better than no cooler, ive seen several turbo conversions that dont even use a cooler, and if your just playing with a diy budget build then use it to get the car running,

custom turbo hoses..... scrap yards will have bags of them, if they charge you more than a fiver for what you want they are ripping you off,

Jim Galbally

quick, look... there's the point!!!


...oh no wait you missed it

Shings

Cant be arsed to read the crap

If you want your RST CARB/TURBO'd I;d have a chat with Karlos and at least get him to set you Carb's up.

Reasons
1 He's shit hot at tuning full stop
2 He's awesome with Webers and carbs in general
3 He's already got a customer with a Carb'd turbo'd engine as Tiff posted and he did the conversion and its been going for sometime now.. and it aint shy.

Its un common to do but sounds the tits, also there are some benefits to be had by using Carbs.. and quite a few pitfalls...


Jake

Tim

iTrader: (1)

the pitfalls is why we didnt do mine cos we got all the bits

Shings