rsmark86

iTrader: (3)

guys im looking to scrap my efi inlet as i dont want to run a restictive adaptor plate and ive got a stage3 big valve mfi head with massive ports , so i want to get either a old xr3i inlet or use the bottom half of my s1 inlet with a custom plenum and port it to match ..... but who can machine it for the fuel rail and injectors......

cheeRS

studabear

why is the adapter plate restrictive? surely it could be port matched?

Versus_Creations

iTrader: (1)

Firstly if you have a decent made head it should be matched to the size of the gasket.

Next the conversion plates i supply are matched to the gasket. (Yours is likely a cheap copy product which infact costs more! but thats another story :P)

So what your saying is that your head must of been machined bigger than the gasket size, which is pointless as you will not gain any more power just because its bigger.

As stu said, the head and inlet if its the best available will be a perfect match with a conversion plate. If its not ported and matched then you will have a small step as its designed for good spec heads to get the most out of it.

Versus_Creations

iTrader: (1)

After reading this agian i thought id pick up on another point.

You say you want to remove the EFi manifold for what you describe as restrictive, but then you want to fit an MFi manifold which is the worst thing you could do for even air flow and decent throttle response etc. The end chambers of the inlet manifold on the MFi system will always be un-even.

Then you want to have some random modified inlet that has had no computer aided design for flow on the injectors.

There is a whole load more to manifolds than what meets the eye.

jamie rst

iTrader: (1)

End off thread lol no more needs saying

Versus_Creations

iTrader: (1)

i do tend to kill threads with answers.

rsmark86

iTrader: (3)

no jano i prefer it when people just get to the point otherwise i wouldnt learn anything .

my problem ive got is that got my head and inlet are well ported and are both alittle bigger than a standard gasket but the adaptor plate is abit smaller so if what ive got is fine but who could match the adaptor plate to the inlet for best flow as im going t34 and greys soon with big boost lol

Rob_DOHC

iTrader: (4)

Any one mate, buy a dremel and get cracking. Use your gaskets as a template.

Rob,

rsmark86

iTrader: (3)

its because i like the look of the xr3i/rs1600i inlet on a turbo engine....

but then i will get it ported by grace engines near me

conor.rst

iTrader: (3)

theres a few people on here that will make u a custom inlet lol crazycage i think

Versus_Creations

iTrader: (1)

Anything can be done fella, my advise would be to match the manifold, gaskets, and conversion plate. No issues and you still have the best design cast alloy manifold that has no restrictions till around 350bhp. Then all it needs is porting to allow more airflow. I have used them on ZT with over 350bhp in std form, no doubt it would of flowed more with the T4 and cams that were fitted after.
The shape and length of the runners are the same and even. This is very hard to design and replicate without lots of bench testing and computer aids. Any other custom or std manifold will be very very hard to find that actually is better with proof and many tests done on it. Anyone can bend a few sections of sheet alloy and weld them up to look lovely. However the chances that it works better than a car manufactors cast item is unlikely. The early manifolds like the RS16i would still not be as good as the later EFi ones.

So its back to my point. Why want anything else than whats designed by Ford for the head to run with EFi injectors.

Versus_Creations

iTrader: (1)

The look of the engine and the running of the engine are two different things. Which is more important to you. IMO the look is better with EFi manifold anyway. Plus everything fits as it should from the factory without having to make up loads of pipes all round the engine bay.

Also when Ford designed the ERST why didnt they just use the manifold from the RS16i or XR3i etc. Instead they designed a one off manifold for the use and flow of the Turbocharged engine.

Turbo Technics and Janspeed etc did use the RS16i type manifold. I wonder if they reported back any info on the matter before ford took it into their hands to make it work better with a new design.

Then years later the same issue when they want to go EFi. Why didnt they just change the inector rail on the ERST to take EFi injector with bracket for rail. Instead again new research and design led to a better manifold.

rsmark86

iTrader: (3)

wicked than mate for the info i might just keep as is then but i need the adaptor plate matched to the inlet and i will need a down pipe for a t34 turbo aswel

project rs

this is the one i had made for my t34 cost me 250 in all and goes to the fuel tank in 3 inch then drops down to 2.5 with a couple of v-bands in it for ease of removal

rsmark86

iTrader: (3)

thats the guy from here ive already got a few prices it looks good i might have to have a bit of that with one of them manifolds so just need a t34 but whats the best spec for it please

Versus_Creations

iTrader: (1)

The easy value for money way to fit the T34 is to buy a std cosworth downpipe Guess around 40quid. Then cut your down pipe slide the std cossie one inside and weld it up.

It dont need any fancy pipes made and it deffo dont need to cost 250 quid. WHAT A JOKE!

Here is one of the many i have made over the last 12 years. Not a great pic but shows you fitted. This car has an RS16i rollbar too which means that the zorst has to be well made so it does not foul the rollbar or brackets.

chaffe

a .48 t3 exhaust housing off a volvo 740 has same wastgate bolt pattern as an rs turbo, so the standard elbow and downpipe can be used, ive got several of these from my local scrapyard before. whole turbo is usualy 30 quid

Versus_Creations

iTrader: (1)

Yes but the Cosworth .48 flows much better. The ones off a Volvo or Saab etc would 9 out of 10 times have cracks and worn to a point you wouldnt want to fit it.

Also when fitting a T34 the actuator bracket is built in making it a direct fit.

If you do it the way you described you need to make a new custom actuator bracket.

chaffe

oh well then

rsmark86

iTrader: (3)

well jano i will have to give you a bell soon