What have you done to your car today?

[TW]Fox · 4 Oct 2015 at 13:26

geekman said:
I never understood why they didn't put the 55k engine in it.

It's not really that hard to work it out, is it?

It was introduced into the small 350ishbhp roadster market - it had exactly the power that was needed at the price it was sold at. More power would have meant more cost and brought it too close to the performance offered by the flagship models.

Frozennova · 4 Oct 2015 at 13:48

Increased the rev limiter to 7500RPM, want higher, not sure if itll take it

Brocky120 · 4 Oct 2015 at 14:42

An SL63 would be the next step from an SLK55. Albeit its a lot bigger car but they are monstrous cars and their torque is unbelievable, perhaps too much. Of course it comes with the AMG Sountrack too

[TW]Fox · 4 Oct 2015 at 14:51

Brocky120 said:
An SL63 would be the next step from an SLK55. Albeit its a lot bigger car but they are monstrous cars and their torque is unbelievable, perhaps too much.

Actually the SL63 had less torque than the SL55 it replaced.

Brocky120 · 4 Oct 2015 at 15:00

Frozennova said:
Increased the rev limiter to 7500RPM, want higher, not sure if itll take it

You'll need some stronger cams, valves, valve springs, perhaps gearbox work to sustain the extra pressure and temps and depending on power and torque you may need pistons/rods/crank. Valves would be one of the most important as you dont want a situation where your valves are still open by the time your piston hits TDC (Top Dead Center).

Watch your ignition timing, as the revs get higher the timing changes, wrong timing would be very bad

Brocky120 · 4 Oct 2015 at 15:06

[TW]Fox;28641588 said:
Actually the SL63 had less torque than the SL55 it replaced.

SL63 has 590ft-lbs of torque.

SL55 had 531ft-lbs didnt it?

SL63 actually now seem to come with 664ft-lbs of torque, the 585bhp models.

[TW]Fox · 4 Oct 2015 at 15:08

Brocky120 said:
SL63 has 590ft-lbs of torque.

SL55 had 531ft-lbs didnt it?

You are missing an SL63 - the SL55 was replaced by the normally aspirated SL63 which had 450lb/ft of torque by virtue of its missing forced induction.

The latest SL63 is once again a forced induction 5.5, rather than the N/A 6.2 that the 63's have been since about 2007. It's therefore more SL55 than SL63 despite it's badge

Brocky120 · 4 Oct 2015 at 15:11

[TW]Fox;28641657 said:
You are missing an SL63 - the SL55 was replaced by the normally aspirated SL63 which had 450lb/ft of torque by virtue of its missing forced induction.

The latest SL63 is once again a forced induction 5.5, rather than the N/A 6.2 that the 63's have been since about 2007. It's therefore more SL55 than SL63 despite it's badge

Ah! Sorry yes I got confused with the models!

Thanks for clearing that up. What was the old SL55, was it 5.5 or 5.4?

Frozennova · 4 Oct 2015 at 15:56

Brocky120 said:
You'll need some stronger cams, valves, valve springs, perhaps gearbox work to sustain the extra pressure and temps and depending on power and torque you may need pistons/rods/crank. Valves would be one of the most important as you dont want a situation where your valves are still open by the time your piston hits TDC (Top Dead Center).

Watch your ignition timing, as the revs get higher the timing changes, wrong timing would be very bad

Ignition is already conservative anyway. Rods/crank/pistons are more than man enough, MX5 bottom ends will take upto 250 ft/lb before things start to go wrong.

The MX5 RS had a 7500rpm rev limit and I'm not aware of any differences, there's a few people running a touch over 8k on standard engines

Housey · 4 Oct 2015 at 16:47

Spent about 3 hours pulling all the stickers and tape off my race car. My fingers are killing!

Vigoro · 4 Oct 2015 at 17:22

Changed the oil on the MX5 then took it out for the first time since bolting the supercharger on. So much more torque!

Frozennova · 4 Oct 2015 at 18:35

Vigoro said:
Changed the oil on the MX5 then took it out for the first time since bolting the supercharger on. So much more torque!

I need to pull my finger out. I'm sure you only started the conversion 5 minutes ago?

Vigoro · 4 Oct 2015 at 18:54

Frozennova said:
I need to pull my finger out. I'm sure you only started the conversion 5 minutes ago?

Think I put the ECU in end of July, bought the remaining bits at the end of August, then just had to wait a few weeks for the brackets to be made and shipped.

Brocky120 · 4 Oct 2015 at 20:30

Frozennova said:
Ignition is already conservative anyway. Rods/crank/pistons are more than man enough, MX5 bottom ends will take upto 250 ft/lb before things start to go wrong.

The MX5 RS had a 7500rpm rev limit and I'm not aware of any differences, there's a few people running a touch over 8k on standard engines

Ooops thought you was the chap with the SLK

I seriously can't imagine increasing the revs by 1000rpm and them being completely fine, at least definitely not in the long run, but I could be wrong.

Phil W · 4 Oct 2015 at 20:40

Fixed the headlights.

They are auto-adjusting and last night (first night I've driven for a while) it decided to point 2ft in front of the car.

Facebook ST page to the rescue. Turns out the arm that connects the level sensor to the wishbone was 'back to front', caused by the car being in the air a couple of weeks ago at a garage.

10 minutes with an 8mm spanner me and all is well again. I love free fixes

DXP55 · 4 Oct 2015 at 21:30

Cleaned front and back windscreens then put on coat of RainX - also gave insides a good clean with Autoglym windscreen cleaner.

To hot to wash car.

CaptainRAVE · 4 Oct 2015 at 22:03

Jez said:
The SLK was never fitted with the 55k engine found in the larger 55 amg models, it's just the n/a 360hp version in the SLK

Lol - just! In a 1500kg car it is pretty impressive. Plus with remaps, xpipe and a few other bits and bobs mine is putting out about 410hp now

Some people have put twin turbos in too, but that is just crazy. Saying that, I would seriously miss the n/a engine. The responsiveness is fantastic.

geekman said:
I never understood why they didn't put the 55k engine in it. I know it's still a very quick car, but 500bhp in a car like that would just be incredible.

It would be much quicker than the flagship models, so that would never happen

Armageus said:
Yep and makes a great noise. My boss used to own one, his brother had a G55 amg which was awesome as well.

I never get tired of the noise, especially the xpipe/resonator/cat delete along with the top down under a bridge/tunnel.

Brocky120 said:
An SL63 would be the next step from an SLK55. Albeit its a lot bigger car but they are monstrous cars and their torque is unbelievable, perhaps too much. Of course it comes with the AMG Sountrack too

I am thinking the next step might be a V10 R8. Will get a bit more life out of my SLK first though.

[TW]Fox · 4 Oct 2015 at 22:06

CaptainRAVE said:
Lol - just! In a 1400kg car it is pretty impressive.

It would be if it was a 1400kg car but it's closer to 1600kg

CaptainRAVE · 4 Oct 2015 at 22:16

[TW]Fox;28643460 said:
It would be if it was a 1400kg car but it's closer to 1600kg

1540Kg. Mine isn't the facelift (that was heavier). Still not a bad ratio between weight and HP.

Plus with most of my exhaust out I must have saved a good few kgs

CaptainRAVE · 4 Oct 2015 at 22:17

DXP55 said:
Cleaned front and back windscreens then put on coat of RainX - also gave insides a good clean with Autoglym windscreen cleaner.

To hot to wash car.

Try the Rain-X Glass Cleaner & Rain Repellent when your rainx runs out. It does both jobs and is much much easier to use.