Aircooled VW South Africa

Does anyone have dyno charts of their VW's? I can't wait to get my Beetle finished up and on a dyno to see what it looks like and was wondering if any one have charts and would be willing to post them? Any charts - standard with mods etc. I would also like to see what a std beetle's chart looks like. Maybe some of the guys with conversions and T4 engines?

Here are the factory charts for TP and SP 1600 engines. Note that the scale is different on the torque charts, which is a little deceptive.

1600 single port:


1600 twin port:


These two charts explode the myth that twin ports make more power while single ports make more torque. The graphs show that the twin port makes more power and more torque at every point on the rev range, and the TP has a flatter torque curve.

Can a stock beetle turn the rollers on a Dyno machine.

Here is mine... if you look closely you can see exactly where the ignition gives up

tony is that on your 170hp 2332cc engine?

louisvr45 wrote:tony is that on your 170hp 2332cc engine?

yip, thats the one

Since I started it I thought I would add one of mine.



This was in 2004 with different cam TCS20, Rajay Turbo (No intercooler yet) and Old basic EFI they couldn't map it so we just did the dyno run. I lost a lot of torque from the previous setup but gained a couple of KW's.
The previous time was in 2001 I think still with Dellorto's regrind cam 041 heads and the rest basically the same. She had 240N & 83KW both @ around 5000.

You still beat me without a turbo Tony.

the one in 2001 sounds like what i need for my SC fleetline

No one else got any charts? It would be nice to see what to expect with which changes.

I have results, if you want:

1914cc with 110 Engle and 041 heads and pair of 36mm IDFs: 60kW and 189Nm

2276cc with 120 Engle and 044 heads and pair of 44mm IDFs: 104kW and 211Nm

Thanks for the info. I thought it would be nice to give everyone an idea of what to expect with which changes. Even small changes like exhaust and carbs. I remember with SP exhaust and twin 34ICH carbs I had 40kW @ 4400 rpm and 101Nm @ 3250 at the wheels.

I wrote a huge long article about what some engine builders did at a workshop in the states as they modified the same engine, bit by bit and run it on the dyno, and then I compared it to my learning curve on the beach buggy. Let me see if I can dig it up and post it here...

My 2165cc a couple of years ago with home ported heads, c55 cam and dave ingle throttle bodies up here in the highveld. The power was measured in kw.

Ron&Gill wrote:I wrote a huge long article about what some engine builders did at a workshop in the states as they modified the same engine, bit by bit and run it on the dyno, and then I compared it to my learning curve on the beach buggy. Let me see if I can dig it up and post it here...

please do, i think that'll be ideal...

I found it, but can't post it, I will email it, pm me your email address, maybe you can modify it so it can be posted...