high HP Nat Asp
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- Speed Racer
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Thanks babs & ct
brian wrote: Reality was he was fudging the dyno to make it look like it was worth the $$ he charged.
hope not, but must concede the possibility...
dubly wrote: A dyno will always have the hp and torque crossing at 5250 RPM. Any change and it has been screwed with.
don't have dyno sheets with me but will check them out with interest soon...
brian wrote: Reality was he was fudging the dyno to make it look like it was worth the $$ he charged.
hope not, but must concede the possibility...
dubly wrote: A dyno will always have the hp and torque crossing at 5250 RPM. Any change and it has been screwed with.
don't have dyno sheets with me but will check them out with interest soon...
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- godfather of saké
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Re:
93_Clubman wrote:dubly wrote: A dyno will always have the hp and torque crossing at 5250 RPM. Any change and it has been screwed with.
don't have dyno sheets with me but will check them out with interest soon...
You might find that the dyno chart just shows the power curve and the air/fuel ratio.
Usually that's all that they show, but in general don't get too caught up with absolute dyno figures, just pick one honest dyno operator that you get along with and stick to him.
Unfortunately my favored dyno operator's dyno is a bit stingy on chucking out the big hp numbers


- Okibi
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- godfather of saké
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Okibi wrote:For turbo / big power cars i'm a huge fan of the DynaPack style hub dynos
Ooh...yeah. If STM wants his COW then we can have a very good bunfight about DynaPack vs Dyno Dynamics hp


- Craig
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Re:
Babalouie wrote:Okibi wrote:For turbo / big power cars i'm a huge fan of the DynaPack style hub dynos
Ooh...yeah. If STM wants his COW then we can have a very good bunfight about DynaPack vs Dyno Dynamics hp![]()
I think maybe STM has contracted Mad COW disease? He's always craving COW!
Here you go Stefan... http://www.mad-cow.org/
- roddclarke
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CT wrote:93_Clubman - you are a lucky man then. Wish I had such luck!
Once again.. i agree..


others & my mods indicate a fairly consistent 20rwkw is achieveable. & i guess it's bonus if you get a high # to start with...
very true



As with varyations in dynos.. personally i just think Dynos shoud be used for tuning a particualr car on a particular day... getting the best from that car... and not to go bragging about who has the bigger HP figure.. to me.. its the fastest car round the track or down the strip.. and most importaintly.. how much better the car feels to YOU to drive


now to check my dynos for this 5250rpm cross over

"If your in 5th, your not having fun"
1:13.26 at Wakefield, 52.92 at OP south, 1:25.97 at OP GP, 1:56.78 at EC.
previously 2002 Supreme Blue... now 2001 Crystal Blue...
1:13.26 at Wakefield, 52.92 at OP south, 1:25.97 at OP GP, 1:56.78 at EC.
previously 2002 Supreme Blue... now 2001 Crystal Blue...
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- Fast Driver
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OK, I 've spoken to mx5mania about that NB8A engine...I am trying to move stuff around my small garage to fit a engine on a stand. The engine will also come with :
Loom, not sure about ECU, clutch, flywheel etc . They have low (or can get) km NB8A engines for around $1500. I think I'll keep my standard 1.6flywheel/ HD 1.6 clutch setup
Now I need to get a engine stand.
So...new engine, headers/exhaust/intake standard ECU ...85rwkw,
tuning microtech 96rwkw.
then pistons, cams, headwork....100+rwkw
Does this sound about right.?
Loom, not sure about ECU, clutch, flywheel etc . They have low (or can get) km NB8A engines for around $1500. I think I'll keep my standard 1.6flywheel/ HD 1.6 clutch setup
Now I need to get a engine stand.
So...new engine, headers/exhaust/intake standard ECU ...85rwkw,
tuning microtech 96rwkw.
then pistons, cams, headwork....100+rwkw
Does this sound about right.?
- CT
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I am still dubious about achieving 20 rwkw without headwork and cams regardless of the ecu tune. Only because I've never seen evidence of it on a non VVT engine. Over 100rwkw NA costs lots of dollars - don't be fooled. Headwork and compression are the areas where hp are found. I think if you took 40-60 thou off the head and just bolted it back on you'd have a chance, but without it I'm doubtful. BTW, this is not a recommendation.
2006 Z06 Corvette - 650hp of wow!
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- Fast Driver
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So CT, do you think its worth the extra expense to do the transplant instead of just the 1.6 refreshen. I mean , 10-15rwkw...am I going to drive it first time and think...why didn't i do this earlier..or will I think, bloody hell, $3000 to $5000 for this waste of time.
And before you ask why I want it to do...I want a fast street drive which is impressive on the track at sprint days. I have a target at my local track which I don't know if I can acheive without some serious butchering of the car for weight..or more oomph.
And before you ask why I want it to do...I want a fast street drive which is impressive on the track at sprint days. I have a target at my local track which I don't know if I can acheive without some serious butchering of the car for weight..or more oomph.
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yarnmx5 wrote:So CT, do you think its worth the extra expense to do the transplant instead of just the 1.6 refreshen. I mean , 10-15rwkw...am I going to drive it first time and think...why didn't i do this earlier..or will I think, bloody hell, $3000 to $5000 for this waste of time.
And before you ask why I want it to do...I want a fast street drive which is impressive on the track at sprint days. I have a target at my local track which I don't know if I can acheive without some serious butchering of the car for weight..or more oomph.
IMHO, a full rebuild on your 1600 will cost into the thousands anyway. I rebuilt my 1800 and the costs were:
Head reco 900
Block machining, bottom end assembly, ACL bearings 800
NB8B pistons, OEM gasket set 1100
Water Pump, timing belt & tensioner 500
Labour/sundries 1200
So that's your benchmark if you want to rebuild your 1600 as a base for further mods...my target was as a good, torquey street driver with some decent snort away from the traffic lights and if it shaves a bit of time arund Wakefield, then so be it. At the moment has 90rwkw with mild cams. If you're in Sydney you're welcome to come for a ride

- CT
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The 1.8 swap is pretty common and will be a better option for power. The difference is torque. Bigger capacity increases torque. That said, I know of at least one B6 that's making decent hp - it's just that it would have cost him the same to do a 1.8 and then he'd be getting more HP. I would certainly upgrade to the 1.8 unless you want to turbo the 1.6 - then it's a whole other story..... 

2006 Z06 Corvette - 650hp of wow!
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No turbo....I used to have a wrx and altough I loved it at the time, my little mx5 is more fun to drive. At sprints, I often have people come up and ask what engine I have in the car and they all get a shock when I tell them the engine is a stock 1.6 with 100hp (at the wheels). They just cant believe a shit-box (the body of my car is pretty bad by my own admission) mx5 "girls" car can keep up and beat many others with more power....but I'm sure you lot know this anyway.
CT I also know of a 1600 with supposedly 175hp (flywheel)...it is out of an old mx5 race car which had an unfortunate incident at Mallala and no longer exists. The engine is just sitting there and I have thought about making an offer, however I'm not sure it would be a "streetable" engine to use daily. I have heard that thousands was spent on the head, throttle bodies and computer, infact I bought my microtech from this guy who upgraded the computer to handle the throttle body intake.
Anyway, I reckon the upgrade is going to happen. I just hope the 1.8 revs as easily and freely like my current 1.6.
CT I also know of a 1600 with supposedly 175hp (flywheel)...it is out of an old mx5 race car which had an unfortunate incident at Mallala and no longer exists. The engine is just sitting there and I have thought about making an offer, however I'm not sure it would be a "streetable" engine to use daily. I have heard that thousands was spent on the head, throttle bodies and computer, infact I bought my microtech from this guy who upgraded the computer to handle the throttle body intake.
Anyway, I reckon the upgrade is going to happen. I just hope the 1.8 revs as easily and freely like my current 1.6.
- maxwolfie
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yarnmx5 wrote:No turbo....I used to have a wrx and altough I loved it at the time, my little mx5 is more fun to drive. At sprints, I often have people come up and ask what engine I have in the car and they all get a shock when I tell them the engine is a stock 1.6 with 100hp (at the wheels). They just cant believe a shit-box (the body of my car is pretty bad by my own admission) mx5 "girls" car can keep up and beat many others with more power....but I'm sure you lot know this anyway.
CT I also know of a 1600 with supposedly 175hp (flywheel)...it is out of an old mx5 race car which had an unfortunate incident at Mallala and no longer exists. The engine is just sitting there and I have thought about making an offer, however I'm not sure it would be a "streetable" engine to use daily. I have heard that thousands was spent on the head, throttle bodies and computer, infact I bought my microtech from this guy who upgraded the computer to handle the throttle body intake.
Anyway, I reckon the upgrade is going to happen. I just hope the 1.8 revs as easily and freely like my current 1.6.
Sounds pretty nuts.. I'm looking to do the same thing, however I wont be swapping engines or anything like that, I probably wont even bother with CR's and high comp pistons and whatnot.. it's all too much cash - plus id rather a quick free revving engine as opposed to an engine with more inertia and torque and whatnot - I'm concentrating on cam selection next for the 1.6
'89 JDM NA6 (black)
2" s/s ex., 4-2-1 extractors, high flow cat, RX-7 AFM + pod, lightened fly, h/d clutch, 2 way lsd, slotted rtrs, Racing beat type II front bar, Speedy 17" wheels
2" s/s ex., 4-2-1 extractors, high flow cat, RX-7 AFM + pod, lightened fly, h/d clutch, 2 way lsd, slotted rtrs, Racing beat type II front bar, Speedy 17" wheels
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Re:
Babalouie wrote:93_Clubman wrote:dubly wrote: A dyno will always have the hp and torque crossing at 5250 RPM. Any change and it has been screwed with.
don't have dyno sheets with me but will check them out with interest soon...
You might find that the dyno chart just shows the power curve and the air/fuel ratio. Usually that's all that they show...
as you say babs - the last two dyno sheets show power curve & air/fuel ratio on y axis with kph on x axis. as the mods were done in steps i have a couple of other dyno sheets interstate which i'll have a look at shortly. btw, in the spirit of transparency, i forgot to mention unichip was tuned for 98 octane. thanks to all for comments on the car & mods.
- CT
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175hp is very strong for a 1.6. It would probably not idle very well and be a bit of a pig on the street though. Plus, there's probably no where left to go on that motor. My 1.8 does about 200hp at the fly but there's more power to come from it as I get it properly setup this season. Might be a fun thing in a road car though - probably not for daily driving!
2006 Z06 Corvette - 650hp of wow!
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