Rod-Tarry

Late last week I finally caved in & said Mark could build me a Power engine & not a compromise road tiddler.

It shows my rather tiny GT40 against this new rather large thing its big & all pipes now dont fit, but the turbo does . It will make big Power & being of much Higher compression than before should love the 120ron fuel, this is my first engine built for Topspeed & its target is to beat its current record off the gas & on the gas it does what it does.
After 2.5 years of slumber Im back on the case of seing how fast these old battleships can be made to go.

CossieRich

iTrader: (1)

BLoody hell

Makes a t34 seem pointless

Will be at Marks soon. Look forward to seeing it in the flesh

Rhys

:O amazing. You got any figures on power your aiming for? Or just see what it makes etc?

Chip

iTrader: (3)

Twinscroll 42R by the looks of it?

Awesome

MAD EVO 4

Porkie

iTrader: (1)

how does a twin scroll work chip?

RWD_cossie_wil

iTrader: (9)

Nice.... Take it all the pipework is going to be V-band clamp joiners now?

Benni

Q.What are twin scroll or divided inlet turbine housings?

What are the benefits of using a twin scroll turbo?

A "twin scroll" or "divided inlet" means that there are two separate volutes within the turbine housing. The main reason for doing this is to isolate the pulses coming from each exhaust port and maintain more of the pulse energy from each cylinder all the way down to the turbine wheel. There are no differences between the turbine wheels used in open or single inlet turbines compared to those used in twin or divided inlet turbines. Generally speaking, a divided inlet turbine setup will respond faster and produce boost quicker than single or open design of the same nozzle area, of course this is dependent upon proper execution.

The simple fact that a divided housing is used does not guarantee these results. While it does not cause any problems or harm to run a divided inlet turbine housing on a manifold that is an "open" design, none of the benefits of the twin inlet will be seen.

Benni.

Renton

Someone obviously didn't read Stav's turbo feature a few months ago... Glad those Redlines I send you are going to good use

Nice turbo by the way Rod

Chip

iTrader: (3)

It divides the exhaust housing into two sections, which when packaged on the right manifold means that the cylinders effectively have their own path through the housing to the wheel.
Basic principle is that it means the pulses can be kept a bit sharper up to the point they hit the wheel rather than the gas speed dropping in the housing.

Ive not got any personal experience of using them, but apparently it works quite well.

Chip

iTrader: (3)

Crikey, beaten to it by Benni, although I assume he googled it and pasted it not typed it, LOL

Benni

It's wrong to assume and I am highly offended that you would think this of such an intelligent person. Stu, Martin Or Karl I could understand but someone as Educat… You’re right I did.

Benni.

Paul_RS

iTrader: (4)

You have a big one lad

Any pics of it beside a T3?

rs_turbo_ant

thats goin to suck kids in off the street

rapidcossie

should be mental! laggy but mental!

Chip

iTrader: (3)

No, thats gary glitter.

Turbosystems

iTrader: (5)

if rod stands to close it will suck him in

Chip

iTrader: (3)

Shouldnt be much laggier (if at all) than an old T4 if done right (which im sure it will be with mark on the case)

TIFF

Nice one rod............

But please dont refer to yourself like that in the title......makes you seem a little......err........big headed

rapidcossie

I have some experience of a the smallest GT42 on a 2.5 litre engine and its no where near a T4.

If Rods turbo is bigger(??) and its on a smaller engine(2.1?) it cant be any better.

C4llyT

Nice one Rod, look forward to your progress.
Good man.

Chip

iTrader: (3)

Was yours a twinscroll on a properly constructed manifold?

If not, its particuarly irrelevant TBH!

rapidcossie

Its a twin scroll with a ceramic coated turbine on a pulse seperated manifold runing on a car with variable valve timing controlled by the map so Its got everything you can possibly do to reduce lag/improve response and its still WAY behind a normal T4.

So it is relevant TBH!

Turbosystems

iTrader: (5)

that shot you down chippers

Chip

iTrader: (3)

Surprised to hear that then, although having all the "right bits" still doesnt mean it was done right.

Chip

iTrader: (3)

More like shot down whoever it was who did it and STILL couldnt get it to spool even with all the right bits on there, lol

rapidcossie

Its been "done right" Chip no worries about that.

Chip

iTrader: (3)

Well then why doesnt it spool well?

rapidcossie

Stick to something you know about Chip

Chip

iTrader: (3)

If you did that, you'd never be able to post

rapidcossie

Notice I chose the words in my first post carefully in saying I have "some experience" rather than "Im an expert on". Unlike you I know Im no expert

Turbosystems

iTrader: (5)

because the turbine was to fookin big unlike rods willy

rapidcossie

exactly!

Chip says a GT42R will spool like a T4 if done right....does that mean a GT35 R spools like a T34? if done right?

RWD_cossie_wil

iTrader: (9)

Rod inspects for damage on his new turbo

Chip

iTrader: (3)

Fair enough

You obviously missed the bit where I said

Chip

iTrader: (3)

Im saying it should spool not far off how a T4 on an old YB spooled as it left ford on the rs500, I specifically said "old t4" as I realise that you could apply similar technology to a newer one to see it spooling sooner, also you seem to be forgetting rods is a 2.2 not a 2.0.

There are LOTS of other factors comparing rods engine with an old t4 engine, NOT just the turbo like you seem to be doing?


And YES a well done modern GT35R engine will indeed spool similarly to an old T34 one did from ford, thats EXACTLY what im saying.

rapidcossie

Fair do's



Hard to beleive there is a subject I can teach you on

Turbosystems

iTrader: (5)

you need a longer ladder to get out of the hole you dug it is a deep one lol
a standard rs500 had restrictors in the front pipe to stop boost climb they also increased lag

rapidcossie

No way in a frozen over hell will any GT35 spool like a T34