charliekay

There is a small group out here that keep pushing each other to go faster, so expect some even better times to come out of here in the future.

Thanks mate. I agree. a 1.6 60ft is pretty crappy. I was cutting high 1.5 60fts with the Stage 2. Need to look into some different wheels and/or tyres.

This is a Weistec tune, but Allen @ International Autohaus who built it, spent quite a bit of time on the dyno, and with the help of Weistec they got the tune to where they want it.

Asher4799

Congratulations!!! That's moving!!!

Merc63

What was done to the tune to pump it up more?

charliekay

It is not pumped up, it is just perfected. Rather than using a base tune, Allen spent time of the dyno getting all the variables right.

I think the headers also made a big difference. I was running a full iPE system and changed the headers to a set of his custom built headers. The iPE was restrictive and this showed with a significant wheel hp gain with the same setup but different headers.

Merc63

are you running the stock resonator back?

What size collector and primaries?

charliekay

Running the iPE system after these headers.

2in primaries. Not sure about collector size.

Here is a pic of them.

mr747

Merc63 there MBH headers modified to fit on RHD cars

charliekay

Correct. Started as MBH headers, but it wasn't just modify to fit a RHD car, there was alot of back and forth to make the best flow and power.

Merc63

Wonder what your running for timing. You're making more power than most stage 3 cars. Dunno if it's the headers.

charliekay

I couldn't tell you what I am running for timing.

It might be the headers, it might be the V2 of the tranny, it might be a well prepped track on a perfect night for racing, but the car is the same Stage 3 kit, belt and 67mm pulley that everyone else has. Only thing different is the the tune and headers.

If you look at the time slips the 3 runs were all done in 20 minutes (6.51pm, 7.02pm, 7.13pm). The car didn't have time to cool and still ran consistently.

BLKROKT

It's a little easier for me to visualize on a spreadsheet. Comparing your three best times on the board - Merc63, Mr747, and charliekay - you can see the differences immediately.



Whatever you're doing charlie, it's working man. Your car seems to just make a lot more power at a given SC stage, evidenced by how fast you were running at Stage 2.

Merc63

My runs were done at about 2500-3000 dA range, far from sea level. But your making another 100hp than I am, so it's not the tranny or the prep. The car is running strong. I suspect they are running more timing in the tune perhaps. Lots of guys are running the mbh headers and aren't putting down that much power. That mph is huge.

blackbenzz

Impressive!

computertom

I'm just amazed that this is stock pistons and rods (non-forged). Has the engine ever been apart?

-Tom

Weistec

The tune is our out of the box Stage 3 tune. The issue was the long tube headers, and partly the intake system on the car. This car actually dyno'd low on the dyno International Autohaus was using.

Our latest transmission upgrades do help getting the car down the track much faster. Hope this helps guys.

Weistec Engineering

charliekay

The times might have something to do with DA. We had a Stage 2 CLK63BS run a high 10.4 out here a few weeks ago, my best with Stage 2 was a 10.57, and even mr747 ran 10.56 with his Stage 2 and that was a different track.

It is not just my car, Weistec is getting faster.

Thanks Weistec. I know these was a problem with the headers, and when we changed the headers over we saw an immediate increase in power.

Thanks for your help with the car, looking forward to going faster.

65fastback

in drag racing...MPH / trap speed is a direct indication of how much power you are making. 137 is awesome.

How much does this car weigh with driver?

Merc63

Well I am excited to get the V2 tranny if it helps out, too bad I sold my drag tires

layzie12g

Jerry from Eurocharged told me in an E mail that MBH headers make less power then the design used by ARH. If this is true or not I do not know. I do know that my car seems to be down on power compared to your average 63. It seems quite a few 63 people run MBH's tri-y set up and make power with the e.t. and mph to back it up. You car is hauling absolute *** though. Good job!

BLKROKT

That's the first time I've heard that one. I thought it was pretty accepted that the MBH setup makes the most power out of what's available off-the-shelf.

charliekay

The car did go 139mph in a 10.26 run. Car is full weight so probably 1800kg+ with driver.

What drag tyres did you have? I am looking at options. Not many unfortunately. Not sure how good the V1 tranny was but the V2 is amazing. Unbelievable.

Lol. A few people Say that the tri-y setup is outdated and don't make max. power. I can tell you that the tri-y setup has had significant gains over my iPE setup. I couldn't care less for dyno numbers. ET and MPH says it all. For example, the dyno we used had its software updated, we lost power just from a software update, and it wasn't a small loss.

I was sceptical about the difference the headers would make, but i trust my guy and he was adamant the existing headers were holding back power. I decided to try it, and how right he was.

layzie12g

There are a few threads from Mike at MBH where he goes really in depth as to why they went with the Tri Y design and the experience they have making headers. That was the reason I went with them, but my car had power issues so I wanted Jerry to look at the tune. He responded with an e mail stating that cars with MBH long tubes make less power, and left it at that. I was a little surprised to hear it, but it seems to not be exactly true from the research I have done.

roadtalontsi

well the mbh headers were also probably designed with the thoughts of an N/A motor. At the time they were produced i dont think any blower cars were out there yet. The scavenging affects of a properly designed header for an N/A car arent going to have any benefits to a blown car, Im assuming this probably becomes a restriction eventually since the air flow volume changes so drastically with the blower setup.

Merc63

You can easily go to burns stainless and input all the engine data to see what headers are needed.

marioflex

I'm not Shure but if PP Performance car, mr747, CharlieKay and myself as many other Weistec cars are using MBH tri Y headers and are running fast I think something has to be right with this headers.