Blacktop Power Figures

[boxxy]

Hey, after running my Rolla up on a Dynapack hub dyno im intereasted to see what power other blacktops are makin at the wheels

I got 101.5kw and 148nm (793 / 5.35)
mods are cat back 2.25" exhaust, modded air box, trd leads and plugs and an earthing kit.

car is a AE111 Corolla GT

Cheers

Tim

[KinLoud]

Should have kept your mint AE85/86...

Ken
Ham
021 408 863

[boxxy]

bah.. the rolla is more fun to drive... and it has a sideways leaver between the seats for when im missing rwd

[Tukumi]

From what ive had to do with blacktop motors in factory trim, they run very rich and tend to blow a bit of black smoke.
But the biggest problem is that they dont like our crappy fuel here in NZ and they detonate causing the computer to retard the ignition hence loosing power. Go aftermarket computer and you will get good gains.

Phil

[Gavin]

Even just some type of aftermarket ignition control has shown to make big improvements on the BT.

This is the nicest stock BT setup I have seen. Made 155 RWHP - 116 KW. Its all about the improvement over the conservative stock ignition management apparently. And that is with crappy California fuel.

http://forums.club4ag.com/topic.asp?TOPIC_ID=95418

[Mr Revhead]

gavin, USA fuel is much better than our crap.

i and others have found that when running 96 20vs work better when set to base timming of 8deg, if set to 10 they tend to hit the knock sensor more often

[Flyboy]

so is 96 or 98 better?

[Mr Revhead]

if you can get 98 its better

[boxxy]

hmm might have to have a fiddle with the ignition then what sort of setup was running on the BT that made 116kw?

there must be a few people that have run there blacktops up on a dyno

[Gavin]

hmm might have to have a fiddle with the ignition then what sort of setup was running on the BT that made 116kw?

The one in that link was running a MegaSquirt n' Spark setup. You can use Mega Spark alone though (or megajolt or whatever) and its very inexpensive. MS is meant to use the Ford EDIS 4 ignition system with coilpacks from wherever. He used MX-5 coils.


Just need that crank sensor, the cog on the crank pulley, coils <- junkyard parts, and the MS unit.

I'm using MS for my turbo silvertop.

[Flyboy]

98 on 8 or 10 degrees?

[Mr Revhead]

well factory base timing is 10 deg on 100 octane.....

[Flyboy]

so bout 9ish?

[Mr Revhead]

well i run my silvertop on 96 at 8deg, and it can still pink a bit, so id say 8-9 would be a good start

[CozmoNz]

hmm, to get it precicse, i wonder if you could install an LED off the *knock sensor* output... wouldnt take any current, and the led would start going off its rocker if you ever pinged. (also would help if you had a noisy exhaust).

I can barly hear my engine over the exhaust at 6k+ rpm. (with silencer out anyway)

just another idea.... but then again, so is an LED shiftlight.... saves accidentally hitting the revlimitor

[B1NZ]

mine as you already know puts out 95.5kw @whells on the same dyno.

Mods - exhaust, excessive oil consumption.

Not entirely sure on the vadality of that dyno run, what was you drive ratio setup on you dyno sheet?
Eventually id like to get a safc2 installed and dyno tuned by Speedtech, they seme to know what they are doing a bit better then i could see if the base plot was the same as when they others did it....

[10k 20v]

as says in sig, on the first run i did tho i got 108kw as my drive ratio was slightly out but the 102 (136.68 hp)was correct, i'm running a link, 4-2-1 extractors and 2.5 inch exhaust, it didn't matter if i took the trumpets out, left them in or ran without the 'trumpet cover' air box and that is a stock blacktop slapped into my 101 untill my new engine is built

[boxxy]

Not entirely sure on the vadality of that dyno run, what was you drive ratio setup on you dyno sheet?

hmm it was 5.350. He had to run it in 4th gear as 5th would hit speed cut - ill find the 6spd ratios and see if its close

[ROBODISCO_20v]

102 Kw in 3rd gear on torque performance dyno.
Going for another run in a few months once i've finished a few more little mods, watch this space.

[BZ-G]

Mine is only 130hp at the wheel for a standard engine with only exhaust and air filter.
Not much but because of my reduce weight… it’s pretty quick around Puke…