My paxo turbo - Page 10 - Saxperience

Chipwizards · 29th May 2017, 20:41

CG should know what torque it should hold. They should know the clamp force, the mean radius and the coefficient of friction and thus, the torque capacity.
70% more power means nothing really, because a high revving engine may have 70% more power but actually have less torque.

gti180craig · 29th May 2017, 20:48

Quote:

Originally Posted by Chipwizards

CG should know what torque it should hold. They should know the clamp force, the mean radius and the coefficient of friction and thus, the torque capacity.
70% more power means nothing really, because a high revving engine may have 70% more power but actually have less torque.

Yea I see what your saying mate it will probably be alright once it's bedded in a little and not as problematic once the boost is capped etc

AdamH · 30th May 2017, 15:52

as Wayne said, its the torque that would be causing the slip.... I know it failed mapping for forgive me I cant remember if you said your driving it on or off boost currently but if its off boost and slipping then there's a problem with the clutch / friction material (contamination more then likely)

if its low boost whilst you sort bits out then again it depends on how much torque you have.. ill dig out my graph later from the first generation of my turbo conversion as I cant remember how much nm it had off the top of my head...

what rpm is the boost coming in? mines fairly low but I change to 2nd before 2.5k rpm and I can launch it whilst rolling - eg just entering the track etc and I have no issues

gti180craig · 30th May 2017, 15:57

Quote:

Originally Posted by AdamH

as Wayne said, its the torque that would be causing the slip.... I know it failed mapping for forgive me I cant remember if you said your driving it on or off boost currently but if its off boost and slipping then there's a problem with the clutch / friction material (contamination more then likely)

if its low boost whilst you sort bits out then again it depends on how much torque you have.. ill dig out my graph later from the first generation of my turbo conversion as I cant remember how much nm it had off the top of my head...

what rpm is the boost coming in? mines fairly low but I change to 2nd before 2.5k rpm and I can launch it whilst rolling - eg just entering the track etc and I have no issues

Drives fine off boost I have to be careful as I can't let the boost climb to much but comes on boost around 2500rpm after about 5psi is when it starts to slip but atm I'm not going over around 4-4500 revs as trying to be careful until I can get the boost capped trying to find a actuator is proving difficult atm

AdamH · 30th May 2017, 16:34

are you running the standard wastegate actuator (on turbo)? if so I take it that its sealed?

From other cars I have seen people file around the lip to replace the spring and then make a plate or clamp to reseal it...

or failing that contact BTNturbo as they have always been helpful for me..

As for how it was mapped I'm sure might starts lower then 5psi at 2500 as I wanted a sympathetic map to ensure I don't spike too much too soon... as I have just recently moved I'm having a nightmare trying to find the box with the paperwork in but I think I had 190ftlb Torque..

gti180craig · 30th May 2017, 16:41

Quote:

Originally Posted by AdamH

are you running the standard wastegate actuator (on turbo)? if so I take it that its sealed?

From other cars I have seen people file around the lip to replace the spring and then make a plate or clamp to reseal it...

or failing that contact BTNturbo as they have always been helpful for me..

As for how it was mapped I'm sure might starts lower then 5psi at 2500 as I wanted a sympathetic map to ensure I don't spike too much too soon... as I have just recently moved I'm having a nightmare trying to find the box with the paperwork in but I think I had 190ftlb Torque..

Yea standard actuator pressure is what I'm using will have a look into btnturbo cheers mate I've found a forge one but seems pricey considering what it is

AdamH · 30th May 2017, 20:05

I went external wastegate to avoid this problem... far easier to change the springs (however some springs are £24 each)

Remember to get one specced to the lowest PSI you are intending to run... then use your boost controller etc from there... also ensure you set the preload correctly.

Out of interest I have a few questions from yourself (just read it all)

What degree thermostat are you using? 82 or 89?
what size piping are you using 2" / 2.25" / 2.5"?

Also JFI Manc and ben_vts also used the cgmotorsport clutches and didn't have issues not sure if they pop on here anymore but could be worth reading their blogs

gti180craig · 30th May 2017, 20:16

Quote:

Originally Posted by AdamH

I went external wastegate to avoid this problem... far easier to change the springs (however some springs are £24 each)

Remember to get one specced to the lowest PSI you are intending to run... then use your boost controller etc from there... also ensure you set the preload correctly.

Out of interest I have a few questions from yourself (just read it all)

What degree thermostat are you using? 82 or 89?
what size piping are you using 2" / 2.25" / 2.5"?

Also JFI Manc and ben_vts also used the cgmotorsport clutches and didn't have issues not sure if they pop on here anymore but could be worth reading their blogs

Standard thermostat mate and 2.25 sized piping not sure what's going on with my clutch then only thing I can think of is the amount of boost that was put thru it on the rr has maybe glazed it??

Chipwizards · 30th May 2017, 21:34

I used to deal with these people a lot back in the 80's when I was involved with Turbo-Technics.

http://www.helical-technology.com/actuators/

axsaxoman · 31st May 2017, 08:31

to clarify your clutch situation
180bhp @3000rpm is same torque as 360bhp @6000rpm,
so when specifying a clutch all you need to know is max torque capacity of the cover and max torque your engine is making

gti180craig · 5th June 2017, 09:11

No real updates atm struggling to find a actuator for my turbo nobody can help me debating opening mine and changing the spring any one know where I can get one from?? Clutch situation ATM is I'm gonna save up for a paddle then try and chase cg for my money back or at least some of it hg is still leaking need to find another gasket and get it changed the garage have agreed to change it for free in the mean time I have noticed the car was getting hot fast in traffic so installed some vents to be different it's very marmite but they do the job was quite scary cutting my bonnet up hahaha

So that's the latest will update when I get things sorted

axsaxoman · 5th June 2017, 10:49

change thermostat for an 82c --std one is 88c--
might help
maybe gte ecu man to later temp which fan comes on at --or fit vts fan monting whioch has holes for 2 fans +put second on switch

gti180craig · 5th June 2017, 10:57

Good idea regarding thermostat any idea where I can get one from ?? Also spoke to cg they have agreed to supply me a paddle clutch at a discounted rate better than nothing I guess

Chipwizards · 5th June 2017, 19:53

The fan arrangement is the most likely culprit if it's getting hot in traffic.
What was the fan like, I can't remember...

adam_baker · 5th June 2017, 20:46

Your getting there buddy, just keep going, will all be worth it at the end

Sent from my iPhone using Tapatalk

gti180craig · 12th June 2017, 15:40

Well I've covered 1200 miles since fitting the turbo and apart from the epic hg leak it's doing ok I received some post today

Actuator and ecu cover actuator arms feels loads easier to move than my current one however I need to get it checked , since cutting my bonnet I noticed when it rained it would drip onto my ecu so broughta ecu cover has Deffo made a visual difference aswell as serving a purpose

Next plans are to get the car booked back in to have the hg done AGAIN urgh then hopefully it should be ready for mapping the issue with the clutch has stopped I've just had to adjust my driving style I've noticed if I don't rest my foot on the clutch pedal it doesn't slip when on boost so I'm gonna try adjusting the clutch arm and hopefully that should sort it also took a couple of pics yesterday as fitted some pressed plates thanks for looking

sri_130 · 12th June 2017, 17:51

http://www.ebay.co.uk/itm/106-Single...-/262634394136

gti180craig · 12th June 2017, 18:38

Quote:

Originally Posted by sri_130

http://www.ebay.co.uk/itm/106-Single...-/262634394136

Quality find nice one

Chipwizards · 12th June 2017, 22:16

You shouldn't rest your foot on the clutch in any case so maybe fitting a footrest would be sensible.

Slackening the cable won't change it unless it's currently too tight and loading the clutch.

gti180craig · 13th June 2017, 06:47

Quote:

Originally Posted by Chipwizards

You shouldn't rest your foot on the clutch in any case so maybe fitting a footrest would be sensible.

Slackening the cable won't change it unless it's currently too tight and loading the clutch.

Well you have literally only have to touch the pedal a bit and it slips so it might be to tight will be in touch soon Wayne to book round 2