Anyone fitted a roller barrel inlet manifold to a YB after some feed back on what you fitted and what improvements you've found. Feel free to post pics

Thanks

 

Mark Shead will tell you it is a good mod for great throttle response so that would be enough for me.

I understand that the wrc one needs to be ported for high power.

It is something I want to add at some point.

Btw, still not had a pic of the inlet we spoke about, do you want to leave it with Mark at some point and I will sort it from there?

 

I would'nt be fitting one if he did'nt recommended it.

It's the last mod to be done to the car would have liked a Mountune 1 but is proving to be impossible to find one.

MK Motorsport & Turbosport seem to do a similar one to a Mountune 1 both claim it is a better than a Mountune inlet.

Will have a chat with Mark to see if he could call them and see which 1 he would recommended to fit because i don't have a clue which one will work best.

Sent you a email few weeks backs with the pics of the inlet.

Just keeping my options open to see what else is around before I buy a new inlet manifold.

 

Yeah, I checked for the email in main and junk. If you have a smart phone maybe you could just text me the pics, I left a number in our pm thread. Happy for Mark to look at it and just what needs doing and if you are buying a roller barrel from MK he can always tig up the inlet for us.

I regret not buying the mountune one that was on here for sale a good while back, it wasn't bad money.

I will go with the MK one when and if I do it.

 

Never so it until after it got sold

Cool will have a look for your number now.

 

I had titan motorsport roller barrels on my zetec turbo, they use a jenvey adaptor plate and i had a custom inlet plenum made. Seemed to work well enough. It made 400bhp/390lbft and the mapping never got finished. Obv that wasnt just down to them, but they looked good

 

Is there an issue using vacuum for brake servo when using the roller barrel?

I know Mark Shead said unless you use drive by wire you cannot have idle control when cold so you have to hold the revs up a little (that will remind me of my old 1.6 gti 205 as that would never idle....it taught me to heel and toe well though.)

 

You can run adle control but you have to mod the inlet
Manifold I had to do this on my jenvey itb,s
And also to run als
But that said it will depend on length of the inlet runner
Ref" material to weld to with out messing up the roller
Barrel bores

 

How does that work? Does it open all 4 throttles at once?...therefore on the throttle linkage?

 

Hm, why would it require DBW? I know Mark used a ISCV on Rods car in comination with the Jenvey inlet and a vacuum manifold. Did they use DBW on Rods car? I only see a normal wire configuration.

Seen top middle:



Bypass:



My solution:



I wonder how to get a proper map-signal from such a vacuum manifold, as the ISCV will generate airflow which might distort the signal?

Mark?

 

I haven’t used any idle valve on rods car what you probably see is the vacuum distribution block for the 4 take offs on the manifold going to it and the vacuum for the map sensor coming off the block.
The cold idle is very good with the Emtron as it has active idle ignition timing to help the cold idle speed.

Mark

 

I assume with dbw the ecu can motor open the butterfly's a little without you needing to put your foot on the accelerator with a target rpm based on engine temp.

 

Yes

Mark

 

Mark, why not use a ISCV?

Will my Vipec V88 be up to the job?

 

I cannot fathom how iscv would allow air in to all 4 inlet tracts without control over the throttle linkage?

 

I didn’t want to put in the extra ports to the inlet and pipe it all up.
Yes the V88 will work I have mapped a multiple throttle body inlet on one with no problems just throttle position map it with a pressure comp table trim.

Mark

 

Join all 4 pipes together to a idle valve. I decided not to go to the efffort to get it working nicely probably easier to go to dbw.

Mark

 

Thanks, that makes sense now.

 

One more question, is there any benefit in 8 injectors if I already have 1000cc jobs? I can imagine if they are not side by side and one further up the tract may help but is there something Else like 2 small better than 1 big?

 

Tech 2 will always be better than 1 but in practice I don’t think it’s worth the extra cost against gains.

Mark

 

This is the big bore roller barrel that I am planning to use from MK.

 

Could you not use the vacuum block you already have and connect a ISCV (with a bypass port from front of intake manifold) to it or would that disturb the map signal?

Thank you for all the help.

 

No you would need to keep it on a separate block.

Mark