My 3B Coupe project - Total rebuild

[A80Avant]

Hey guys get a room will ya?

[emoji14]

[AndyP]

New shiney parts arrived the other week, thanks to Danny at DNA Autocare for getting these for me at a great price

http://www.dnaautocare.co.uk/

Also got a set of adjustable top mounts from Albert, just got to find time to fit them all now.

[Error404]

Great! You won't be disappointed

[PRY4SNO]

v3? If so, that's another part we share in common haha

[DNA-S2]

You are welcome Mr P [emoji4]
DNA doors are open for you mate if you want to use facilities to fit them!
[emoji106]🏻[emoji482]

[AndyP]

Been buying more parts ready for the suspension re-build. These are Whiteline ARB drop links, let's see if they last any longer than stock items that I seem to replace at least once a year!



I also got a new steering arm mounting brkt from Jay at Dynamic Motorsport Developments, I'd wanted one of these since I saw the prototype he made for James's race car so when I saw he was doing a production run I made sure I was top of the list

http://www.dm-developments.com/

Fitted this today, only been for a quick spin around the block so far, but the steering feel is much improved, some of this is I think down to the removal of the damper, but it feels more direct too.

[AndyP]

Now the long awaited dyno results, I was never bothered about it going on the dyno as my 'seat of the pants' dyno told me it was doing what I wanted it to , but I bowed to peer pressure and joined Danny at the DNA dyno day yesterday.





The first run we did gave 422bhp in 4th gear, but the dyno was shutting down at 90mph, we have a couple of tries with the same result so they had to switch it off and back on again. This left me heatsoaking nicely! When we tried again, same result, so this run was done in 3rd gear. After this the dyno was fine and nobody else had a problem

In case anybody asks about the boost not peaking until 4250rpm, I've set it like this with the boost controller, I can make it ramp and peak much quicker but in the lower gears it's too savage, it's much more drivable as it is. Besides It seems to be using the boost very efficiently, by 3000rpm it's making 250ft/lb of torque at only 045bar of boost, this is 100ft/lb more than a comparable 400bhp 2.2ltr car

I'm more than happy that it's achived my taget of 400bhp & 400ft/lb

[diesel des]

Nice curves. Remind me what turbo is that? My efr peaks the torque higher so power is flatter.

Sent from my HTC Desire HD A9191 using Tapatalk 2

[zafra]

what is your turbo?

[AndyP]

GT3071R, 0.82A/R hotside

[Error404]

Nice figures, I bet it's awesome on the road
Love the LMs

[diesel des]

Yep good results with the 3071. Would be good to see what its like with low to mid range boost set to savage..

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[PRY4SNO]

Great looking curve, looks very driveable anywhere over 3000 rpm!

[AndyP]

Well my car did not make it down to ADI due to a grumbling front wheel bearing, so here's the tale of the fix.

This is the old bearing I took out, it's a Ruville bearing bought from a well known Audi parts supplier and I'm guessing at the mileage, but it can't have done more than 10k miles





The outer seals were still intact but as you can see there is not a great deal of grease in there and looking closely at the face you can see where it's started to break up, causing the noise



Now, if you search for 'wheel bearing' on here, you'll find on almost every thread user Caterpillar banging on about putting this fancy Mobil grease in your new bearings, so I decided to get some. I couldn't get the grade he used, but after asking the local Mobil rep, he recommended this



So I striped the new bearing, FAG bearing this time. As you can see, still light on lubricant.



Cleaned out the old 'grease' which looked very much like Vaseline!



And re-packed them with Mobil's finest synthetic grease



The first test drive revealed that it's now as quiet as a mouse, so I'll be doing the other side when I get chance.

I'll report back on the long term benefits

[AndyP]

Also found another horror story while I was doing the bearing. When I took the brake caliper off, the brake pad literally fell apart

Part of the pad had already broken off


The rest of the pad had cracks running through it and fell off as soon as I lifted the caliper off the disc


There is plenty of life left in the pad, so a visual inspection through the wheel would not reveal any problems. I decided to try a different pad this time, these were DS2500, so I went for Pagid S sport pads


Even though they are listed as used in 996's I had to cut of these 'ears' to get them to fit.


I've only done about 20miles so far but initial findings are that they've got loads more bite from cold compared to the DS2500's, I'll report back on high speed findings once they're bedded in.