Combining JMS RS2 with Boost? Possible?

[JakeyP]

Just wondering if anyone has combined a JMS RS2 inlet manifold with some form of boost setup?

I can only imagine a few possible problems with combing the two,

1) With the inlet not being built for high pressures it could leak/break?
2) Turblance
3) No extra power gains

Lets add the senario:
172 f4r block, Jms rs2 inlet, supercharger, 8psi boost... Anyone think of any problems or do not's?

 

[172Ben]

Turblance??

Cost of money for power output would be my first thought.

 

[markkram]

I believe Tom was looking into this before JMS closed. The manifold was never designed to be subjected to + pressure so was untested in that respect.
I don't think it even got beyond finding a way to mount the MAP/Inlet Temp sensor so it wasn't immediately blown out once + pressure was achieved.

 

[Laine_16v]

On the flip side, I can remember them saying the manifolds themselves were very strong and would take boost no problems.

 

[Silent_Scone]

If it's never actually been done there is only one way to find out

 

[TheEvilGiraffe]

If it's never actually been done there is only one way to find out

 

[Chapppers11]

DO ITTTT.

 

[Rubicon_]

Would be good to see, do it!

And turbulence LOL?

 

[Chapppers11]

Need a cup spoiler on to reduce that, more downforce.

 

[Rubicon_]

Don't forget wind deflectors as well.

 

[Budgie]

Positive pressure is untested i believe. Would imagine there would be ways of overcoming all of the potential issues. it's just costs.

 

[JakeyP]

Turbulence decreases air flow and predictability causing bad maps and loss of potental power so it was a good thing to assume in my books, but clearly I was wrong so thanks for ruling out turbulence.

Can anyone else vouch for RS2 taking boost pressure before I blow mine up?

I'm a bit skint due to buying all the bits and I still need injectors, ecu, smaller radiator and a couple more silicone bends... Then a map, then looking into building a block strong enough to hold all the power rather than blowing up 500miles later

 

[Jamesstone]

Keep your eyes on Michael Woodford's turbo project thread, His will be running an RS2 boosted, aiming for the 350/400bhp mark!

Few changes have been made, mainly to the MAP & AIT bosses, I wouldn't recommend it on a standard N/A built RS2 Intake manifold

 

[Jamesstone]

Hasn't been up-dated for a while but there has been plenty going on behind the scene's - http://www.cliosport.net/forum/showthread.php?592670-Soon-to-be-supercharged

 

[JakeyP]

Thanks James that's helpful! =)

 

[Ex-User (19928)]

Can't see it being worth it? If you already have RS2 it would make more sense to sell that on to subsidise the cost of the charger setup.

 

[Chrisgti6]

Surely it wouldn't be too hard to get it pressure tested to ensure it can withstand + pressure? To be honest unless your going to be running massive boost I can't see how there would be a problem.

 

[Gaz.]

Surely it's capable of holding 1-1.5bar. Even my piss poor welding can.

 

[Jay_Kay]

You may get this warning :rasp:

 

[Chip-mk1]

The carbon will be fine for moderate boost, its incredibly strong, its not the usual cheap crap most car parts are made from.

The issue is that if its an N/A built RS2 it uses push fittings forthings like the map sensor, like the standard manifold does, which are designed for the inside to always be equal or lower pressure than atmospheric, so they can pop out if you pressurise it, thats only a case of the need for retaining them in some manner though and hardly the end of the world.

I think you'll get a really nice response to boost with one, if you look at most decent turbo cars they run a similar shared plenum arrangement rather than the long seperate runners on the standard inlet.

 

[Chip-mk1]

Surely it wouldn't be too hard to get it pressure tested to ensure it can withstand + pressure? To be honest unless your going to be running massive boost I can't see how there would be a problem.

How do you intend to do that?

If you mean just pump a bar of air into it and go "oh look it didnt blow apart" then yes very easy but also very pointless, its the continual pulsing that causes plenum failures normally.
I know of quite a few "custom" plenums made for other cars (normally in ally) that have been fine for 2+ bar of boost for a few K miles, but even on far less boost have still failed on high miles due to the fatigue from the pulsing effect.

 

[Chrisgti6]

How do you intend to do that?

If you mean just pump a bar of air into it and go "oh look it didnt blow apart" then yes very easy but also very pointless, its the continual pulsing that causes plenum failures normally.
I know of quite a few "custom" plenums made for other cars (normally in ally) that have been fine for 2+ bar of boost for a few K miles, but even on far less boost have still failed on high miles due to the fatigue from the pulsing effect.

But the OP will only find this out after using it in a real world situation, all I was suggesting is that there are ways of testing it will hold boost. Until someone uses this setup, we'll never really know will we?

 

[Chip-mk1]

But the OP will only find this out after using it in a real world situation

Indeed.

all I was suggesting is that there are ways of testing it will hold boost. Until someone uses this setup, we'll never really know will we?

Indeed, I was just pointing out what an inconclusive test that actually is, I would hate anyone spending their money thinking they had tested it when they hadnt.