944 Turbo S Engine Rebuild Thread
- Thread starter Eldavo
- Start date
scam75
Well-known member
What a lot of work, but you seem to be enjoying it and having fun! Results so far look encouraging. I'm interested to know how those big brakes feel, as I am struggling to imagine brakes being any better than what I currently have with your old set-up. Are you still standard on the rear?
My car stands on its nose now with a lovely progressive pedal, and so far I haven't triggered the ABS, even in the wet. I know it works as it used to cut in regularly even with half-hearted wet braking. An almost inoperative front caliper however would explain that.....................
My car stands on its nose now with a lovely progressive pedal, and so far I haven't triggered the ABS, even in the wet. I know it works as it used to cut in regularly even with half-hearted wet braking. An almost inoperative front caliper however would explain that.....................
"Smooth and easy to drive off boost, progressive and early to build it and then an absolute weapon once you did. 30mph in 4th, put your foot down and off you go, although my testicles weren‘t large enough to do anything over 4k rpm in 4th as high revs in 3rd puts you in “lose your licence even on the motorway“ territory (I’m lead to believe anyway 
).
45 mins later and the only missing fluids from the car were V-Power, no lights on the dashboard for once either"
How satisfying that must be after all the drama. Brilliant result with more to come - after 46 pages of bloody minded determination. A great story.
).45 mins later and the only missing fluids from the car were V-Power, no lights on the dashboard for once either"
How satisfying that must be after all the drama. Brilliant result with more to come - after 46 pages of bloody minded determination. A great story.
TTM
Well-known member
You are not going to leave us standing there, like all these other 16V turbo guys who keep boasting about massive performance yet won't provide a proper dyno sheet, are you? 
Congrats for all the hard work, especially how you remained stoich with the recurring oil leaks. I can't wait to hear how you get on and excited to hear how much it will make once fully tuned.
Stuart - I was pretty much in the same mind frame as you about the bigger brakes especially as I did not want to increase unsprung weight but really the car has so much more power with that sort of engine that the bigger brakes become a necessity, and once you become accustomed to the power and drive the car at its natural pace they end up feeling not a lot more powerful than the M030's, at least with std pads.
Good point about the bias - I did fit the 928 GTS bias valve to increase power to the rear brakes, and the car feels just fine under heavy braking now.
Congrats for all the hard work, especially how you remained stoich with the recurring oil leaks. I can't wait to hear how you get on and excited to hear how much it will make once fully tuned.
Stuart - I was pretty much in the same mind frame as you about the bigger brakes especially as I did not want to increase unsprung weight but really the car has so much more power with that sort of engine that the bigger brakes become a necessity, and once you become accustomed to the power and drive the car at its natural pace they end up feeling not a lot more powerful than the M030's, at least with std pads.
Good point about the bias - I did fit the 928 GTS bias valve to increase power to the rear brakes, and the car feels just fine under heavy braking now.
Last edited:
Hard to say really - will probably know once I get it on the track. When I did have to stamp on the anchors they bit well and were easy to modulate without locking up.
You are not going to leave us standing there, like all these other 16V turbo guys who keep boasting about massive performance yet won't provide a proper dyno sheet, are you?
Good point about the bias - I did fit the 928 GTS bias valve to increase power to the rear brakes, and the car feels just fine under heavy braking now.
You get the dyno print out at the end of the day. When I actually make it to the end of a dyno day then you’ll be the first to see it I promise!
Considered the 928 GTS bias valve too but holy moly they know how to charge for them - £££££££
scam75
Well-known member
You are not going to leave us standing there, like all these other 16V turbo guys who keep boasting about massive performance yet won't provide a proper dyno sheet, are you?
Congrats for all the hard work, especially how you remained stoich with the recurring oil leaks. I can't wait to hear how you get on and excited to hear how much it will make once fully tuned.
Stuart - I was pretty much in the same mind frame as you about the bigger brakes especially as I did not want to increase unsprung weight but really the car has so much more power with that sort of engine that the bigger brakes become a necessity, and once you become accustomed to the power and drive the car at its natural pace they end up feeling not a lot more powerful than the M030's, at least with std pads.
Good point about the bias - I did fit the 928 GTS bias valve to increase power to the rear brakes, and the car feels just fine under heavy braking now.
Cheers Thom
I have Mintex race/fast road pads, and I have to say, they are awesome with rebuilt M030 calipers and all I need in the land of 8 valves. Get your point about serious power upgrades and the need for larger stoppers though.
Stuart
blade7
Well-known member
After getting used to 370 mm discs on one of my daily cars, and tyres that are all done by 2k miles on bikes, you can't have too much of either IMO.
Also received my Chinesium version of a Tial 50mm BOV.
Pulled it all apart and checked it over, regreased it and reassembled with a 12psi spring from Mamba Racing. £16 for the spring and only £20 for the BOV delivered. If it’s terrible then I can fit a genuine one on the same flange but for 10% of the price it’s hard to see how the Tial is over £200 better! Dropped the bits of with my fabricator to weld the flange on and also check the valve and parts for tolerances, etc. Big thumbs up from them so far. Should be a good upgrade for the 25mm Forge valve given all the extra airflow I’m moving now.
Pulled it all apart and checked it over, regreased it and reassembled with a 12psi spring from Mamba Racing. £16 for the spring and only £20 for the BOV delivered. If it’s terrible then I can fit a genuine one on the same flange but for 10% of the price it’s hard to see how the Tial is over £200 better! Dropped the bits of with my fabricator to weld the flange on and also check the valve and parts for tolerances, etc. Big thumbs up from them so far. Should be a good upgrade for the 25mm Forge valve given all the extra airflow I’m moving now.
blade7
Well-known member
Is that an atmo BOV? Had one on my Cos years ago, I think pigeons were impressed with the noise
.
I like the noise #chav - it came with 2 springs, one was too soft and meant it was open under normal idle vacuum and the other was too stiff and didn’t open when needed. I consulted the log files for the actual vacuum levels ant idle and found the corresponding “Goldilocks” spring, ordered it and all is well in the world.
Been blatting around for 5-600 miles of fun and got the dyno booked for the end of June. Due to work and holiday commitments that was the earliest date either of us could do. I’m off to Le Mans in a few weeks - was pondering on taking the Twbo but after a trip out at the weekend that involved dropping MrsEldavo off on the way I think it’s just too noisy and raw for 9 hours schlepping along the motorway.
Been blatting around for 5-600 miles of fun and got the dyno booked for the end of June. Due to work and holiday commitments that was the earliest date either of us could do. I’m off to Le Mans in a few weeks - was pondering on taking the Twbo but after a trip out at the weekend that involved dropping MrsEldavo off on the way I think it’s just too noisy and raw for 9 hours schlepping along the motorway.
PSH
PCGB Member
I have driven some very long trips in mine, never felt the need to take a break on route, mind you my car still has all its creature comforts which does make life more comfortable. I'm not a fan of sports seats much prefering the normal comfort type for this reason. BTW, I also love my CHAV sounding BOV....ex Cossie fitment.
Pete
Pete
scam75
Well-known member
I'll give you that.........
Posts made and opinions expressed are those of the individual forum members
Use of the Forum is subject to the Terms and Conditions
