Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Stage Three Kit from Krazy Horse impressions

crikey , apart from the dyno tune , that sounds like the Morgan stage 2 kit which is about £1000 cheaper or was when I bought it about 2 years ago. (Before VAT)
Anyone got any evidence this is not the case ?

See below quote from a previous thread:




Beware all these HP figures.

Morgan (apparently) don't have a dyno. They failed to answer any of my questions along these lines....I think, like the originally quoted 115hp....which then shrank to 82 hp (?), numbers are being chucked about willy nilly.

The only numbers I have are from my Stage three dyno chart from Krazy Horse which shows only a small gain over Morgan's (so called) official 3 Wheeler figure. I wonder if Morgan's number was even
accurate at 82hp.

The actual (untuned) Mog output may be as much as 40 hp LESS than the original test cars gave..OR were claimed to give. Why was this? To protect the drive train? To protect the driver? To protect the engine? Was the original engine set-up half baked? Or was it a way of value adding ...ie detune and then sell performance kits? I have no idea.

It's a Mog sized mystery.

The original brochure quoted an estimated 115bhp and an estimated 0-60 time of 4.5 seconds . It also states "a weight of less than 500kg " ....

My standard 2012 car was tested on the KrazyHorse dyno , I passed the printout on to Tim W when I sold it but I seem to remember the horsepower being just below 80 . So your car tested on the same dyno is showing a very worthwhile improvement !

Interesting topic. I am going to fit the G56 pipes very shortly. The car is going to KH for service on Friday, it would be interesting to have dynamometer readout If the pipes are fitted by then.

For info this is the printout that Hugh had of his car.



Tim

Bencmaster, congrats on your new upgrade.

I'm glad you're seeing some seat of the pants improvement.

As far as what the true improvement is, I find it very sad that KH didn't do a baseline pull on your M3W prior to the work they did. How else can the quantify you're getting what you paid for.

Any tuner I'm familiar with will do at least one or two baseline pulls and then after the upgrades do all their "tuning" pulls until they have the AFR, torque and HP all figured out. Your AFR is just a straight line, so it's hard to say what changed from your over lean original MAP versus their after MAP.

Either way though, you're happy with the outcome and that's what it's all about.

But it would have nice to see what a stock M3W puts out.

Thanks for posting that Tim 72.93 is a bit lower than I had thought I remembered , it'll be very interesting to see what difference the G56 exhausts make , hope you get them fitted before the service .

Dan the print out that Tim posted is of a stock 2013 car .

Hugh

I do agree about the baseline dyno test. As for AFRs, its not actually a straight line on my Mog tune, I certainly don't use straight line when setting up on aircraft, but then nor do they vary massively either.

I think, there is very roughly a 8-10 hp hike (say 10%) since the Stage three, but it may be less. This is based on what the dyno chart says and what they say a standard Mog kicks out. Seat of the pants estimate suggest broadly same.

Quantified against the cost, it might be well well worth it if you do a lot of two up / A road travel, assuming no problems manifest themselves with the upgrade..


Ben

Remember that there is a generally 10% to 20% difference between rear wheel HP and crank HP. And it's also very dependent on the dyno, the weather, etc. So 85 RWHP could easily be ~110 crank HP. You really should not compare across dyno results as there are too many variables.

I'm also surprised they didn't do a before/after run on the same dyno under the same conditions, as that's really the only way to see a relative change.

After speaking to Stuart at Kh.
Horsepower figures are subjective at best, depending on how they are calculated.
It also depends on where they are calculated from.

Some dealers take their readings from the crank, some take them from the rear wheel.
Some dealers quote maximum figures.

My bad...