Mercedes E63s Estate 2014 Project Time @ MSL Performance

[anglaslt]

This thread prompted me to look back at the Volvo 850 Estate BTCC racers of the early-mid '90s. Interestingly, one article says the estate is "aerodynamically superior to the saloon but not an ideal track car due to having a lot of weight behind the rear axle and a higher centre of gravity". I'm not in any way doubting what others have said because I simply don't know but I assume Volvo didn't see the estate aerodynamics as a disadvantage.

Good luck with an interesting project, whatever the outcome.

 

[Peter DLM]

Everyone knows that the rear of the vehicle is more important than the front when it comes to being slippery through the air. How anyone can say a vertical drop is aerodynamic is beyond me.

Plus BTCC cars top speed isn't that great.

 

[st13phil]

Thanks for taking the time to do the maths lol. I knew you’d step up.

Hehe

So that's 1164.5bhp then?^^^^^^

My "fag packet" calculations are something of a gross oversimplification, so I wouldn't dream of trying to put a precise number on it, but "much more horsepower than you think" pretty much sums it up.

The difficulty with just looking at peak BHP numbers is that the engine produces that at only one particular speed (rpm). The top speed for a car geared to be drag limited - in other words it won't hit the red line in top gear, no matter how long you run for - will be where the total drag force equals the thrust available, and depending upon the gearing of the car, this may occur at an engine speed that is lower or higher than that at which the peak BHP is produced. Resolving those issues is where people like Mactech of this parish earn their money.

Enzo Ferrari famously said that aerodynamics was for people who couldn't build engines. He was totally wrong: at high speeds aero is absolutely critical as tiny reductions in drag have massive consequences on the amount of power required.

 

[John]

Everyone knows that the rear of the vehicle is more important than the front when it comes to being slippery through the air. How anyone can say a vertical drop is aerodynamic is beyond me.

Plus BTCC cars top speed isn't that great.

I didn't know that I must admit but I would also say that BTCC does not need top speed. Acceleration and handling are key there.

 

[Doodle]

Where's Wunibald Kamm when you need him?

 

[clk320x]

Is it only me none of the images are working for?

 

[damiandavis]

same issue with the images here..

 

[R1NGA]

Richard Meaden and the evo magazine folks got 225mph out of a Skoda Octavia with only 600bhp, which is not a particularly small car. Slippery matters a lot, clearly.

Bonneville Skoda: the technical story

 

[SW18]

Another factor here is space available to achieve the top speed. Bonneville has a huge track (10miles or so?) so plenty of time to squeeze out the last bit of acceleration. But (I assume) UK events have only a mile or two to reach the top speed, thus a theoretical top speed is no good, the car has to have the power to be able to get to speed quickly.

 

[BTB 500]

Everyone knows that the rear of the vehicle is more important than the front when it comes to being slippery through the air. How anyone can say a vertical drop is aerodynamic is beyond me.

Plus BTCC cars top speed isn't that great.

I think it was fairly widely accepted that the estates were a stunt used to get extra publicity for Volvo's entry into BTCC. IIRC they only ran them for the first season, switching to saloons thereafter.

 

[ACID]

Hey Guys had a few issues with Photobucket so now trying Flickr!


IMG-20171018-WA0193_zpsreue3c2o by Acid M, on Flickr


IMG-20171019-WA0136 by Acid M, on Flickr


DSC09317 by Acid M, on FlickrDSC09325 by Acid M, on Flickr


IMG-20171020-WA0147 by Acid M, on Flickr


DSC09401 by Acid M, on Flickr

 

[ACID]

IMG-20171023-WA0140 by Acid M, on Flickr


IMG-20171023-WA0138 by Acid M, on Flickr


IMG-20171023-WA0126 by Acid M, on Flickr


IMG-20171023-WA0127 by Acid M, on Flickr


IMG-20171023-WA0130 by Acid M, on Flickr

 

[ACID]

Next We have fitted the Intercooler System

Primary Heat Exchanger with Res Tank and Secondary HE

IMG-20171024-WA0098 by Acid M, on Flickr

IMG-20171024-WA0100 by Acid M, on Flickr

IMG-20171024-WA0101 by Acid M, on Flickr

IMG-20171024-WA0115 by Acid M, on Flickr

IMG-20171024-WA0109 by Acid M, on Flickr

IMG-20171024-WA0107 by Acid M, on Flickr

 

[ACID]

Some more Goodies Arrived while I have been away @ Sema 2017 Las Vegas

TTE Turbo 900 BHP
I will be testing these turbos to see how far we can push them and how safe it will be for the engine!!!

IMG-20171026-WA0095 by Acid M, on Flickr

IMG-20171026-WA0047 by Acid M, on Flickr


UPD Pulleys with light weight Crank Pulley and UPD Air Filters.

IMG-20171109-WA0061 by Acid M, on Flickr

IMG-20171109-WA0056 by Acid M, on Flickr

IMG-20171109-WA0059 by Acid M, on Flickr

IMG-20171109-WA0057 by Acid M, on Flickr

 

[Cyclone1]

Build threads are always the best......those turbos.....

Jules

 

[c_200k]

Those turbos look sweet.

Can' wait to see the finished product.

 

[Peter DLM]

Nice!

 

[Luke-BITURBO]

Acid do you think I would get any gains if I go wmi and upd spacers? I want to go more power but don't want to go turbos yet

 

[ACID]

Acid do you think I would get any gains if I go wmi and upd spacers? I want to go more power but don't want to go turbos yet

Without turbos not much more power let me finish this project and lets see the results.

 

[ACID]

Dyno Graph



The car has been tuned so far with a stage 2 Map,
Weistec DP
3inch Exhaust system with rear boxes
AMS cooling.

BHP
751 bhp
854 tq



The car Pulls like a train but as soon as we hit around140mph the car seems to slow down and feels like it taking ages to get to 180mph. I can say I was very disappointed and maybe thinking this was the wrong car to do this project! But With Further Data logging it seems the IAT were rising rapidly and causing the car to pull back on power. This was caused with the system having air in the turbo system and require further bleeding.

Next step is to fit the TTE turbos. TTE have had their car tuned in Germany and have made 888bhp and around 1250nm tq. So hitting the 900 bhp should not be a problem and with meth /race fuel maybe 950 bhp.

I will Test the TTE turbo setup on vmax and see if we can break the 200 mph which in theory should not be a problem.

I have also purchased the Weistec W4 Turbos Setup which will be here in a few weeks. On 20psi they are hitting 1000 bhp. The turbos can be pushed to 50 psi and capable of hitting 1400 bhp. I don't think the stock engine can handle much more then 1000bhp. The W4 Turbos are VERY Expensive and don't see anyone else doing them in the UK.The TTE Hybrid Turbos are affordable and should make good safe power for daily use. The W4 Turbos have a lag on spool up and will not be good for the 1/4 mile but they will be awesome 1/2 to 1mile plus events.

Thanks Acid