View Full Version : Dyno Power run, very happy!!
As some of you may know I took my ZS for a dyno power run to determine the stock BHP and torque prior to doing anything to the car.
Turned up at Noble Motorsport earlier this morning and got the car put on the rollers, a few checks were done to make sure everything was running rite before the actual run. Had the proper run done and everything was spot on! Then was presented with my power graph and was very very surprised! lol me and my mate both were.
A stock ZS 110 (1.6) figures according to Parkers and Rover should be-
BHP- 107
Torque- 102 lb-ft
My so called stock ZS 110-
BHP- 123.0 at 6729 rpm
Torque- 108.2 lb-ft at 4960
SO WELL HAPPY!! just gotta figure out why its producing those figures from a stock engine and car!! I asked about over readings on the Dyno but the technician said they are spot on as he had a stock MX5 on the other day and the figures were bang on. I am going to give it a 2 BHP leniency but still very happy.
Let the modding begin lol
Video-
http://www.youtube.com/watch?v=PNybQGy1a2c
BUCKYDEVIL
06-03-10, 03:08 PM
Sounds like the previous ((One carefull woman owner)) new what she was doing !!
Good result you got there mate..
peterzs
06-03-10, 03:13 PM
Save you a few bob, already got over 10% power increase, good choice of car.
:):):)
Jay-ZS+
06-03-10, 04:18 PM
You sure you not got a 120?! But even then its a good result!
Stephen
06-03-10, 04:54 PM
Might get mine stuck on one and see what its doing :)
Thats a good result from a 110!
Thanks everyone! very happy!
You sure you not got a 120?! But even then its a good result!
No mate definitely the 110, if I had the 120 engine the torque figure would have been higher.
I have been told by a mechanic friend and also the dyno tech man said that every engine produces different power etc. It can depend on how they are assembled and how well the parts are working with the generic map. Also been told that the paper figures mg-rover put out there were usually acquired by dyno-ing the bare enigne without ancillaries. It can all affect the overall power supposedly.
Tom :)
leezs110
06-03-10, 06:25 PM
That sounds like a really good result Tom! ;)
i may get mine on the rollers at some point would be good to see what she makes! :)
Cheers mate :)
Obviously they are not 100% accurate but they are the best guess figures you will get I assume.
All manufacturers bench test engines, they are connected to a dynamometer.Just like this Lotus K Series getting tested (http://www.youtube.com/watch?v=kPbzuvwzNB4)
All engines are different, no 2 engines are ever the same even if you have built them side by side using all the same parts.
All manufacturers bench test engines, they are connected to a dynamometer.Just like this Lotus K Series getting tested (http://www.youtube.com/watch?v=kPbzuvwzNB4)
All engines are different, no 2 engines are ever the same even if you have built them side by side using all the same parts.
Can that affect there power output though? I expect the Dyno today was over reading to some degree because surely a ZS 110 that has bench marked at 107 BHP by Rover cant be producing 123 can it?? stock too??
Tom :)
Dave ZS-X
06-03-10, 08:13 PM
imo no.....tolerances are one thing but 15% up over rovers quoted figures is obviously a little bit optomistic.
If that were a zs 180 running 15% high it would have been a zs 200 out of the factory...sorry it would be great but it just doesnt happen.
When a manufacturer dyno's theyre engine to publish a figure they wont just pick one willy nilly, they will dyno several and release figures from the best one already, hence why most cars make either spot on the book figures or a little under.
Ive been to several rolling roads and they all claim theirs is accurate because of so and so, but try 5 different rollers and you will get 5 different results so someones wrong...or all of them are, lol.
Just be happy as its obviously a nice healthy engine.
stamford
06-03-10, 11:02 PM
Sure is a high figure for the 110 if indeed stock. I would say there is something in there to add that much more over stock figures. Make sure you don't have an add-on that has caused this as it may invalid your insurance.
Update!
I've had a crazy nite to say the least lol. I got in contact with some lads over on mg-rover.org and we came to the same decision as we have on here, its a very high figure for a so called 1.6 110. Me and a friend over there started going through the stages with help from other members.
First of all I got my cars VIN number and using the MG-Rover VIN meanings chart started to match it all up to make sure everything is correct. 2 letters did'nt match on the chart....engine and body type. According to my VIN number and that chart my car should have had a 1.8 160 vvc engine in!!!
Obviously thats not true as it looks nothing like a VVC engine does. After a while we found the VIN was correct using some old MG/Rover software so there is nothing to worry about on that front.
The second thing I found out is this particular MG ZS was made in 2005! but registered on a 54 plate. I have been told by an ex- mg/rover employee that it would have been made to order car produced very close to the collapse of the company. Its been said at that time when they were running the final cars off MG/Rover would use any parts they could get there hands on to complete the cars. E.g. This could be using a 1.8 engine and trying there best to down tune it to a 1.6 or using different engine variation internal parts in a 1.6. Very unusal... I can almost certainly say myne is a 1.6 engine (??) but who knows it may have some 1.8 parts in it.
Finally a lad came along and said my figures match very closly to his car which is a Rover 25 1.8 (ZR 120 engine) with TF 135 cams. After looking at his power graph we were both in the 122/125 BHP area but he had over 115 ft lb of torque were I only have 108.2 lb ft (maybe). So maybe there is already TF 135 cams in the car, I looked and there is no Veniers but tomorrow may take the cam cover off and look for the codes on them to check.
Soooo to sum up. Its a 1.6 engine (VIN matches), it may/could have some other engine parts in the head that could affect the BHP (we will never really know) or it may be a stock 1.6 with 135 or Piper cams already installed.
Sorry for the massive post hahaha
the head on 1.6 and 1.8 is the same its the stroked length of the pistons that is different
Sorry meant to say the same internal parts not heads.
Edited.
Jay-ZS+
07-03-10, 08:51 AM
Well sounds like its running well whatever you have hidden away, Theres no need for verniers with the 135 cams, so you could have some fitted. Its still a very good result for a 120, My 120 had 52mm tb, VVC inlet mani, VVC exhaust mani, Decat, Janspeed cat back, open cone and that made around 125-127! So sounds like youve found a nice motor :)
Very doubt that you have a missmash of an engine using various parts, the engines that got supplied to MGR were complete units from Powertrain, they weren't built on the production lines.
It has been known that a few engines from various manufacturers in the past have been slightly over quoted power outputs, a friend had a stock Ford Focus 1.8 Zetec, and that produced 121bhp, instead of the Ford quoted output of 115bhp, and it isn't the first time these things happen, just put it this way you have a very healthy engine to start from, work on the the premise that you have a stock output figure and take it from there, that way you will not be too disappointed when a mod that you have done doesn't live up to what is claimed on the box.
As for your car being built 2005, and having a 54 reg, means that it was probably built between 1st January 2005 and 28th February 2005 (54 reg starts 1st Sept 2004 and ends 28th February 2005)
My derv is a 2005/54 plate and was registered 19th Feb 2005.. What you need to remember is that manufacturers build on bulk, and leave them sitting in a field somewhere to gather dust and bird pooh before they're actually sold.. I would be surprised if mine was actually built in 2005, but could be wrong!
Best way to be sure is to get it to another RR day and see what it does on a different road..
From what I can gather MG-R were very slap-happy with their approach to building cars near the end, and a large number of vehicles turned up at the dealers with 180 kits when they hadn't bee spec'd, so I wouldn't be surprised if yours does have a few bits extra.. I would be surprised if the engine was any different as KevG said, they came complete ready to bolt in!
My derv is a 2005/54 plate and was registered 19th Feb 2005.. What you need to remember is that manufacturers build on bulk, and leave them sitting in a field somewhere to gather dust and bird pooh before they're actually sold.. I would be surprised if mine was actually built in 2005, but could be wrong!
Best way to be sure is to get it to another RR day and see what it does on a different road..
From what I can gather MG-R were very slap-happy with their approach to building cars near the end, and a large number of vehicles turned up at the dealers with 180 kits when they hadn't bee spec'd, so I wouldn't be surprised if yours does have a few bits extra.. I would be surprised if the engine was any different as KevG said, they came complete ready to bolt in!
The only different bits would probably be interior/exterior fit and finish, as the powertrain side of this ie engine/gearbox etc will be complete units.
Rite-o cheers lads. Think i'm going to have to stop trying to figure it out as i'm either going to drive myself crazy or end up messing the engine up lol. I'll just use it as said above that the engine is healthy and ready for modding. :)
Only thing i'm going to look at is what Cams are already in the car, but that won't be until I go about fitting my new 135's.
Tom
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