MK1 Leon GT2x Build - thats it folks

[jamiebennett81]

Borrowed from another thread written by DPJ

'Lower pressure = less volume = less chance of the seals being blown out'

ah right, got ya, thanks

just got a quote back from CR Turbos - they are making the restrictor up and sending a few clips out for £15

the guy I spoke to was VERY helpful and phoned me back in 10 minutes, saying he could do the job!

its being shipped out today hopefully for delivery tomorrow

now how is that for service

 

[RobDon]

cheers mate

just called CR Turbo's and they are going to get a clip sent out to me and are now looking around the workshop for an oil restrictor to be made up

in laymans terms, what is the advantage of the oil restrictor in place (to restrict oil yes) but why?

To reduce the oil pressure entering the turbo, Most turbos only need around 30psi to lubricate the bearings, 1.8T sees over 60psi so pressure must be reduced to stop the bearings and seals from blowing. Big mistake IMO for ATP to sell these turbos without a restrictor.

Thank God for companies like CR Turbos.

 

[jamiebennett81]

To reduce the oil pressure entering the turbo, Most turbos only need around 30psi to lubricate the bearings, 1.8T sees over 60psi so pressure must be reduced to stop the bearings and seals from blowing. Big mistake IMO for ATP to sell these turbos without a restrictor.

Thank God for companies like CR Turbos.

thanks Rob. Alot clearer now

easy to fit? guess its just a case of unscrew the oil line and screw the restrictor in?

I am bit weary to up the boost till I get this restrictor put in place, as its only running 1.1 bar, but with 1.4bar soon to be running, that is quite an increase in pressure

 

[RobDon]

Yes, undo the oil feed line on top of the turbo, undo the elbow going into the turbo, screw in the restrictor (the restrictor may well replace the union that is under the elbow, not as well as) then fit the elbow to the restrictor, refit oil line. Pic below shows where it should go:

http://i312.photobucket.com/albums/ll330/SonicBlueLeon/turbo02res.jpg

Oil pressure is different to boost pressure. I wouldn't hammer the turbo until the restrictor is fitted no, I am convinced that's what eventually blew my turbo. The only reason it didn't go sooner is due to being a non-daily driver and very low miles.

 

[jamiebennett81]

Yes, undo the oil feed line on top of the turbo, undo the elbow going into the turbo, screw in the restrictor (the restrictor may well replace the union that is under the elbow, not as well as) then fit the elbow to the restrictor, refit oil line. Pic below shows where it should go:

http://i312.photobucket.com/albums/ll330/SonicBlueLeon/turbo02res.jpg

Oil pressure is different to boost pressure. I wouldn't hammer the turbo until the restrictor is fitted no, I am convinced that's what eventually blew my turbo. The only reason it didn't go sooner is due to being a non-daily driver and very low miles.

thanks Rob. I will leave it at 1.1 bar then till i get the restrictor fitted then.

hopefully I can get this done for next week then

 

[RobDon]

Once I get my turbo back I can take a pic of the new restrictor, hopefully tomorrow.

 

[ibizacupra]

I am bit weary to up the boost till I get this restrictor put in place, as its only running 1.1 bar, but with 1.4bar soon to be running, that is quite an increase in pressure

oil pressure is crank speed related not boost related

 

[jamiebennett81]

oil pressure is crank speed related not boost related

so it's ok to go ahead and get the MBC fitted then?

 

[jamiebennett81]

Once I get my turbo back I can take a pic of the new restrictor, hopefully tomorrow.

already there mate

once again, awesome service from CRT

is it easy to put on though?

 

[jamiebennett81]

well I fitted the Forge MBC tonight and went for a test drive

after much driving, stopping and adjusting the MBC, it is still not sorted

the car is now pulling harder and stronger, and the induction sound is also louder and the dump of air between gears is also noticeably louder

the car is boosting at 1.15/1.2 bar

this is being measured mechanically at the moment via the boost gauge. VAG com is being purchased next Friday which will allow me to measure it a bit more accurately

however the issue is, the Forge MBC is now maxxed out and will not adjust anymore!

so the car is quicker, but is still not reaching its optimum, and it cannot be adjusted any further, so now the only resolution is to fit an EBC

however after speaking to a few tuners, they seem very wary and will not fit an EBC or know very little about fitting one. Me and electronics do not mix so I am certianly not going to have a go at fitting one.

Star is a little too far to travel of course. The only other well known tuner to speak to is Vince at Stealth racing to see if he can fit one

failing that, I am stumped!

 

[The MoffMeister]

ive got an ebc jamie and they are very good smoothed out my issues i had with the mbc

easy to wire and adjust buy one

 

[jamiebennett81]

ive got an ebc jamie and they are very good smoothed out my issues i had with the mbc

easy to wire and adjust buy one

cheers mate - what one do you have?

been looking at the Apexi one

I am going to buy one, for sure, but I am very nervous to say the least to be wiring directly onto the ECU

 

[The MoffMeister]

ive got the greddy profec b spec 2 you dont need to wire it into the ecu it goes in place of the n75 etc

 

[DPJ]

Jamie, I found there's a 'sweet spot' with the mbc and it's difficult to find. Around that, minor adjustments either way make a big difference. Perhaps you just haven't found it.

 

[The MoffMeister]

easier though an ebc dont you reckon dave?

 

[jamiebennett81]

ive got the greddy profec b spec 2 you dont need to wire it into the ecu it goes in place of the n75 etc

thanks mate, that sounds a bit more easier to deal with

I was looking at the Apexi AVC Type R model, but how is this connected? into the ECU or like the Greddy connection?

Jamie, I found there's a 'sweet spot' with the mbc and it's difficult to find. Around that, minor adjustments either way make a big difference. Perhaps you just haven't found it.

there is a sweet spot? this is odd, as I drove, stopped etc and each time wound the boost controller up which of course increased boost

so are you saying, wind it down and drive, stop etc untill it hits optimum boost? not saying it wont work, but a little sceptical turning it down to find "more" boost

 

[The MoffMeister]

not sure on apexi mate know there good thing robdon has one but unsure mate, the greddy is piss to fit mind

 

[DPJ]

easier though an ebc dont you reckon dave?

I was trying to help him now...

 

[The MoffMeister]

lol sorry

 

[jamiebennett81]

not sure on apexi mate know there good thing robdon has one but unsure mate, the greddy is piss to fit mind

I think in terms of just wanting to "up" the boost and meet the required map, this seems like the most viable option, and seems pretty easy to do as well

on the EBC moff, do you just click on the buttons so to speak to select PSI i.e. hitting the + button to meet the desired boost?