Disappopinted $2000 spend

[NitroDann]

You will find that if you lean the car out at the top end by adjusting the air flow meter you will get significant gains, adding the extra fuel on top of the already hideously rich mixture from factory is only going to make it much slower.

Magna blue knows quite a bit about the process.

A lot cheaper than a proper ecu and with your mild setup will work great.

Dann

[mexiegirl]

I'm no expert but i'm thinking the following. Have you got an upgraded exhaust, headers and intake. Without these your mods won't do much. You need to get more air in and exhaust out to make the most of your mods.

Also a piigy back ECU would enable you to tune it which would increase the power for sure...

Hi Mark
thanks for your reply, I just answered to inb4dann about the same question as to prev mods
Thanks

[mexiegirl]

Get ecu + tune it all = winrar!
I made top end 6rwkw just from ecu (best of 8 or so mid range) and that was on top of exhat and intake.
How does your car drive after? Any difference down low, mid or high?

Hi there weevil.
It is more responsive on the freeway now Abit more responsive the whole rev range is genarlly better ATM. I've adjusted the intake cam to max advance to be better off mark.

Thanks

[NitroDann]

I just answered to inb4dann

haha.

Basically if you have a good straight through exhaust and intake, and the tune is right id expect another 10-15hp from what you have done if it had all been done right, at the very least start by verifying its tuned right, with a 50 dollar dyno run with the o2 sniffer in it and see just how rich it is, but Id bet its in the 10:1 ratio where it needs to be closer to 12-12.5:1.

That will be worth a fair bit of grunt

I assume you have increased base timing also?

Dann

[mexiegirl]

Hate to rain on anyone's parade but when you deviate from the stock engineering then anything can happen.

So many times I have been tempted to 'experiment' with the factory setup only to come across variables which can put you back to where you did not want to be.

Face it, the BP engine for the mx-5 is a highly developed little twin cam. If you want to flock about with the settings then you are playing with fire.

About the only thing that makes any sense financially is the turbo, intercooler, exhaust, ecu route. Which in itself is a pain in the arse.

Other than that, enjoy it for what it is and wring the tits off it.

Thanks Aussie stig but my lil Mexie likes her boobs

[mexiegirl]

Beats what Ford and Holden puts out nonetheless

Hey there Shuey (BTW I have to ask what's Shuey mean)

True that, Holden on 1996 was still using a dinosour 1950's engine design (IE VK non crossflow head ect....)

[mexiegirl]

Hiya Paul (nice pic BTW)

I will speak to him 2moz I gave him over a week to settle down his grumpiness and lack of interest to help me after pick up

I'll keep you posted, I know he'll come up with jibersih of "yeah we did it right & it's all good love" ect....

[mexiegirl]

No ecu, no tune, disappointing but semi expected. Can't do that big of a change and not alter the tune. 2k sounds pretty cheap for what you did.

Sent from my GT-I9100 using Tapatalk 2

True it was cheap, I just hope I didn't get a cheap job done, I was hoping for good value
ECU upgrade next

Thanks

[mexiegirl]

Damn Damn Damn

I just spent about $2,000 on making some horsey's for my NA8, I took the head off myself and took it to a performance engine guy, shaved the head to 10:1, ported and CC'd the chambers. While waiting for the head I match ported the manifold and deburred the throttle body. I also took the cam's to Camtech and reground to both 8.5mm and 256 deg advertised, serviced the injectors and ceramic coated my 4,2,1 extractors and metal intake tube.
End result is I think about 5 horspower (WTF).
I also to finish I added adjustable cam wheels so I played with them so power is maximum.
In theory I was expecting around 30 horsepower, where did this go wrong guys, I should have spent the 2,000 on a turbo.

A

here is my take on it. and only going on the info you have provided already.

impossible to shave head to 10:1, the most you can shave off a BP-05 head will only give you 0.15 extra compression. if you paid for that, was a waste of money.
wtf is ported and CC'd chambers?
also you removed lift from the exhaust camshaft.

the headwork is something that you do later in your engine modding life, as it only net gains for 0-1%. which is why it is something left to last, exspence vs gain is minimal. and by having the camshaft regound like they way they were, you've gained in some aspects and lost in some aspects, reducing the net hp gain.

most toda/procam/maruha camshafts only gain 5-7kW/7-11hp on a stock engine that will be stock ECU friendly. any camshaft in the 250s will play fine with a stock ecu. and all those cams i listed have an extra 1mm of lift over yours which increases torque and finally peak hp.

but if you are planning to upgrade the ecu, then those camshafts a just expensive poorly reground paperweights. as you can upgrade to almost any duration and power increase with a programmable ecu.

It's sucks to read what you have written because it's very true what you have said. I need to speak to Camtech and find out why they did the profile that way, and speak to the head machinist and find out where it went wrong

Thanks heaps

Could've saved $800 but buying new Maruha F-cams and cam gears and installing them yourself. Would've got the same gains or better. You live and you learn.

[mexiegirl]

Damn Damn Damn

I just spent about $2,000 on making some horsey's for my NA8, I took the head off myself and took it to a performance engine guy, shaved the head to 10:1, ported and CC'd the chambers. While waiting for the head I match ported the manifold and deburred the throttle body. I also took the cam's to Camtech and reground to both 8.5mm and 256 deg advertised, serviced the injectors and ceramic coated my 4,2,1 extractors and metal intake tube.
End result is I think about 5 horspower (WTF).
I also to finish I added adjustable cam wheels so I played with them so power is maximum.
In theory I was expecting around 30 horsepower, where did this go wrong guys, I should have spent the 2,000 on a turbo.

A

Do you have before and after dyno charts for the car? If so post them here, if not how do you know how the engine has responded to the changes?

There are a number of things that could be wrong.
-even though the head was ported, did you make an improvement to flow?
-Match porting the manifolds can be detrimental, as it can upset air speed and entry angle to the port
-Those cams aren't overly big, I wouldn't expect much of an improvement with them by themselves
-What inlet manifold are you running?

Cheers
Woz

Hi there Woz
-How do you mean "did I make any improvements to flow" do you mean did I do more to the manifold ect to make it flow better or did I bench flow it, I didn't get the engine guy to bench flow it Silly me trusted him.
-manifold match porting was just an open up to match the head, the head guy used the new metal gaskets to measure where to grind
-I know the cams where ground a little small, i'll keep you all posted about that lil outcome
-standard inlet manifold

Thanks heaps
A

[mexiegirl]

I just answered to inb4dann

haha.

Basically if you have a good straight through exhaust and intake, and the tune is right id expect another 10-15hp from what you have done if it had all been done right, at the very least start by verifying its tuned right, with a 50 dollar dyno run with the o2 sniffer in it and see just how rich it is, but Id bet its in the 10:1 ratio where it needs to be closer to 12-12.5:1.

That will be worth a fair bit of grunt

I assume you have increased base timing also?

Dann

I'll see if and why the cams where ground so mild 1st I did ask for full rev range to him with more power, then i'll do the dyno tune with a nice computer to suit
Thanks again

[noddi85]

Beats what Ford and Holden puts out nonetheless

Forgetting the ford sierra cozworth rs500 maybe?

[mexiegirl]

Beats what Ford and Holden puts out nonetheless

Forgetting the ford sierra cozworth rs500 maybe?

Yes obviously ! ! !

[mexiegirl]

THANKLS TO EVERYONE THAT ASSISTED TO HELP ME

TAAZ

[shuey]

Hey there Shuey (BTW I have to ask what's Shuey mean)

True that, Holden on 1996 was still using a dinosour 1950's engine design (IE VK non crossflow head ect....)

Shuey's a nick that my mates gave me in high school since some of them can't seem to pronounce my name sometimes