Boosted's operation 12 second
29 June 2015, 11:25 PM
#451
Scooby Regular
Be interesting to see what it makes.
I'm having a constant battle of wills with myself at the moment. I want a bigger turbo, more power, more torque. But then I start asking myself does it actually need it? It's damn quick as it is and so useable and I don't want to ruin it.
I'm having a constant battle of wills with myself at the moment. I want a bigger turbo, more power, more torque. But then I start asking myself does it actually need it? It's damn quick as it is and so useable and I don't want to ruin it.
30 June 2015, 06:13 AM
#452
Scooby Regular
Thread Starter
Be interesting to see what it makes.
I'm having a constant battle of wills with myself at the moment. I want a bigger turbo, more power, more torque. But then I start asking myself does it actually need it? It's damn quick as it is and so useable and I don't want to ruin it.
I'm having a constant battle of wills with myself at the moment. I want a bigger turbo, more power, more torque. But then I start asking myself does it actually need it? It's damn quick as it is and so useable and I don't want to ruin it.
12 July 2015, 09:14 AM
#456
Scooby Regular
Thread Starter
Turbo is on and road tested, seems ok, got a few weeks for shakedown yet.
Once it's remapped I am changing the clutch and flywheel to an organic sprung centre solution. Still looking into possibilities with the clutch and cover, the paddle and unsprung centre is somewhat hard to live with!
Sachs racing do a cover that will hold 390 lbft with an organic disc, I have already made another flywheel blank to modify.
Once it's remapped I am changing the clutch and flywheel to an organic sprung centre solution. Still looking into possibilities with the clutch and cover, the paddle and unsprung centre is somewhat hard to live with!
Sachs racing do a cover that will hold 390 lbft with an organic disc, I have already made another flywheel blank to modify.
12 July 2015, 09:23 AM
#457
Scooby Regular
Thread Starter
The 20g did .5 bar by 2800, 1.0 bar by 3500 and 1.3 bar by 3600 ish.
I will check what the big 16g does boost wise. Certainly does 1.5+ at 3500, quite laggy then it all comes in at once. Not sure how it holds boost as I'm not revving it above 4k. When it's on boost still 10:1 AFR so safe as houses 😂
I will check what the big 16g does boost wise. Certainly does 1.5+ at 3500, quite laggy then it all comes in at once. Not sure how it holds boost as I'm not revving it above 4k. When it's on boost still 10:1 AFR so safe as houses 😂
12 July 2015, 09:36 AM
#459
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Thread Starter
Here's the start if the new flywheel, to be continued once I score a clutch
12 July 2015, 10:10 AM
#460
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Be interesting to see what it makes.
I'm having a constant battle of wills with myself at the moment. I want a bigger turbo, more power, more torque. But then I start asking myself does it actually need it? It's damn quick as it is and so useable and I don't want to ruin it.
I'm having a constant battle of wills with myself at the moment. I want a bigger turbo, more power, more torque. But then I start asking myself does it actually need it? It's damn quick as it is and so useable and I don't want to ruin it.
I have to say 330 was the perfect amount of power. Useable and most importantly reliable.
12 July 2015, 04:41 PM
#461
Scooby Regular
Thread Starter
Have to agree, big turbos are not easy to drive fast, you really have to work them hard, the torque from a small turbo is far more fun on a wet road for example when trying to slide about a bit.
13 July 2015, 09:56 AM
#462
Scooby Regular
Thread Starter
Right the verdict is in;
20g= .5 by 2800
1.0 by 3500
1.3 by 3600
Big 16g = .5 by 2500
1.0 by 3000
1.3 by 3200
1.55 by 3500
Small 16g. 1.5 by 3200
So as you would expect, the big 16g is right in the middle of the two.
Full boost by 3500 is very nice, very punchy. Can't wait to get a decent tune on it now.
20g= .5 by 2800
1.0 by 3500
1.3 by 3600
Big 16g = .5 by 2500
1.0 by 3000
1.3 by 3200
1.55 by 3500
Small 16g. 1.5 by 3200
So as you would expect, the big 16g is right in the middle of the two.
Full boost by 3500 is very nice, very punchy. Can't wait to get a decent tune on it now.
Last edited by boosted; 13 July 2015 at 09:57 AM.
13 July 2015, 08:54 PM
#464
Scooby Regular
Thread Starter
After living with my unsprung paddle clutch for about a year now (that's how long audi box has been in) I am now looking for some refinement.
Namely an organic clutch with a sprung centre that will hold the torque. NOT EASY!
The sprung centre will get rid of the gear noise I'm getting (sounds like a mild straight cut box 800-2500 rpm due to solid centre).
The current clutch is for a FWD golf/audi A3 O2M gearbox, with duel mass flywheel, no space inside the cover for a sprung centre.
The other option is the clutch for the audi gearbox, namely a 2.7 biturbo RS4 one, but god knows if that will clear the starter.
So I asked the "specialists" at CG motorsport for a few rough dimensions, dia etc. They were absolutely no help what so ever, as is the usual story (and I've had it time and time again) if your doing it yourself and making your own bits no one else is interested! Even If if your trying to buy bits off them! Thanks!
So taking a risk I have been on eBay and scored a brand new clutch kit from euro car parts.
Reduced from £290 to £134 (presumably because they aren't shifting many).
Listed for audi 3.0 TDI, S4, RS4 I can only assume it will take the torque? If it fits!
Starter may be getting even more weight reduction lol.
Namely an organic clutch with a sprung centre that will hold the torque. NOT EASY!
The sprung centre will get rid of the gear noise I'm getting (sounds like a mild straight cut box 800-2500 rpm due to solid centre).
The current clutch is for a FWD golf/audi A3 O2M gearbox, with duel mass flywheel, no space inside the cover for a sprung centre.
The other option is the clutch for the audi gearbox, namely a 2.7 biturbo RS4 one, but god knows if that will clear the starter.
So I asked the "specialists" at CG motorsport for a few rough dimensions, dia etc. They were absolutely no help what so ever, as is the usual story (and I've had it time and time again) if your doing it yourself and making your own bits no one else is interested! Even If if your trying to buy bits off them! Thanks!
So taking a risk I have been on eBay and scored a brand new clutch kit from euro car parts.
Reduced from £290 to £134 (presumably because they aren't shifting many).
Listed for audi 3.0 TDI, S4, RS4 I can only assume it will take the torque? If it fits!
Starter may be getting even more weight reduction lol.
Last edited by boosted; 13 July 2015 at 09:00 PM.
. . . you tart. 
22 July 2015, 05:50 PM
#470
Scooby Regular
Thread Starter
The machining is the easy bit, it's the research and designing that takes a bit of thought!
Still don't know if the clutch will work on my gearbox
Still don't know if the clutch will work on my gearbox
23 July 2015, 10:23 PM
#473
Scooby Regular
Thread Starter
I'm happy with it, the spigot bearing is a needle roller bearing pressed into an aluminium post that's pressed into the flywheel. It's the only way I could do it and keep the bolts as short as possible/flywheel as light as possible and also give clearance on the friction disc (although the disc is pretty flat on the back).
It seems the B7 RS4 (4.2 v8) clutch is a common upgrade for the B5 RS4 guys (2.7 v6 biturbo). So it must fit inside the bellhousing?! Find out soon enough.
It seems the B7 RS4 (4.2 v8) clutch is a common upgrade for the B5 RS4 guys (2.7 v6 biturbo). So it must fit inside the bellhousing?! Find out soon enough.
29 July 2015, 06:23 PM
#475
Scooby Regular
Thread Starter
10 August 2015, 05:41 PM
#478
Scooby Regular
Thread Starter
Yeah it's ok, wet today so was spinning up all four in first!
Hard to say, feels wee bit quicker than when it had the small 16g on. Happy with the result. Andy is a top bloke, had some good conversations with him.
Injector duty cycle is 88%
Hard to say, feels wee bit quicker than when it had the small 16g on. Happy with the result. Andy is a top bloke, had some good conversations with him.
Injector duty cycle is 88%
