stock fwd beams 3sge dyno results

[urantia]

chuck, i think your spot on there, but with the addition of toyota's "we've engineered reliabilty into our cars" which i read in an owners manual printed some 20 years ago. it's like they've taken the time to engineer every nut and washer for reliabilty.

Rob, hehe naw thats the same beams as before, the one in the aw11. I'm still looking for one to go into the st162 tho. Now i hear there is a 6th gen 3sge! but probably just internet talk.

Will try to upload some vids of the beams in action. (getting upto 190km/h in pretty quick time.)

[RobST162]

dude that would be awesome (YouTube it!)

you will be my hero if you put the beams in the 162.. there's a dude who did it to his 5th Gen celica somewhere.. on OzCelica he is.. I think he's doing 0-100 in 5.5 seconds

[urantia]

really? 5.5seconds for 0-100! that's impressive!! i'm still in awe of celicaRA45's 200rwkw mark for his NA beams motor!!

[RobST162]

that's so amazing

ok here's the link

http://www.ozcelica.com/deltaforum/i...showtopic=4551

[nb86]

that's really not lean for a NA or even a FI motor that low in the power range. mid 14's are perfect down there. ecotoec (gasp! ) engines run much leaner than that on light throttle/low rpm and on closed loop well..... and they go for 4 - 500,000 k's. most people with aftermarket management run way too rich throughout most of the fuel map, especially down low and cruising.
fight the norm, most tuners go over rich because it's safer and they can't be bothered/arent being paid to spend the time sorting out the intricacies of the fuel map.

[urantia]

informative info nb86 thanx!

[Roman]

Hi there.

sorry to bump an old thread!

But I just got my MR2 dynoed the other day.

It's a single VVTI redtop engine from an ST202, done ~35,000kms, TOMs extractors, HKS intake pipe, Apexi pod filter.

A few other mods, but nothing that should affect power.

I managed 113kw at the wheels, only revving out to 5400rpm or so.

Mine was running so stupidly lean, that they backed it off, and I didnt get a full run.
I'm still investigating why it was running so stupidly lean, it shouldnt be considering the basic mods.

You should be making a bit more than 96kw though.



P.S. There's a few dyno plots here, that me and a few others have collected for various beams engines.

http://www.mr2board.com/forums/beams...-registry.html

[urantia]

that 96rwkw was probably to do with his stock aw11 air intake system, if oyou have a look at the other dyno it's 106rwkw which isn't too far off the mark of what your getting. But that is interesting that you are getting 113 rwkw at 5400rpm pretty nice. No doubt you are running aftermarket ECU?

Those A/F ratio's are crazy man! far out! But once they are sorted out i'd be very interested to see the results! plz do keep us updated!

[horse]

roman, this isnt the one that you bought which had burnt was it? great result anyhow

[Jorrs]

that is very lean, im suprised that they let it go untill then,
thats pretty nice power though

[thechuckster]

i think that counts as dangerously lean ... or the wideband O2 sensor they used is too far from the engine and too close to the end of the taipipe.

i'd suggest pulling the plugs to check them for signs of pinging/detonation damage and also checking fuel pressure at the fuel rail.

[Roman]

Yep, I was skeptical of their AF ratios.

I mean I've had the car running for about 6 months, been to a track day, and have generally beaten on this engine incredibly hard, haha.

If it was running that lean the whole time, I'm sure it would have blown up by now.

They clipped the AF ratio meter just on the end of my tail pipe, I would have thought it would have to go in a bit further. Also I'm running the standard SW20 dual exit muffler, I dont know if that would make a difference.

But yep I'm working through a few things at the moment, it hasnt quite been running the same since last time I pulled the engine out a month or 2 ago, I think I may have some earthing problems, and/or a vaccuum leak. I'm fairly sure that one of the gaskets on my catalytic converter isnt as good as it could be, I could have an air leak inside the exhaust, but I wouldnt think that it would suck air IN.

It's also possible that the AFM needs to be back in the factory airbox to work properly, but I think it's other problems causing the lean readings.

Anyway yep, will keep you all posted!

P.S. Yep I did buy a blown beams 3SGE engine, but it isnt this one. I've rebuilt that one, and it's currently sitting on an engine stand, waiting for a home.
It looks like it will end up going into my AA60 carina, but I've been thinking about selling it for something different.

[aw11man]

I think my lower power figure of 106.5 rwkw or 142.7 rwhp can be explained

everything is stock accept for a no name brand pod filter tapped into the aw11 intake via a pvc pluming pipe from hardware store, 2" supercat exaust which would restrict higher rpm flow and the spark plugs are just the recomended denso's.
It does have a bit of a miss at idle which has always been there but no idea how to fix that really. I also used only bp 98 pump fuel.

113rwkw at 5400 is prettey impressive, did u use 98 octane? might be 91 or 95 in ur tank to be so lean, i also noticed your dyno says 3rd gear, not sure if this is correct or what difference it makes.

[Roman]

Yep, it was done in third gear, because it's impossible to do in fourth and get a full reading without hitting into the speed cut.

Third gear is good till about ~145-150kph.
That's running a rebuilt gen 5 NA SW20 gearbox, 15" RP01s with 205x50x15 toyo proxes T1Rs.

I'm not entirely sure how they get a KW figure if they dont know engine speed or wheel speed, I'm going to email them today and ask.

Okay one question, how do you have the airflow meter setup in your car?

I've got mine welded into an aluminium pipe, which I got with my other engine.
It would be a coincidence at best if it was the same cross sectional diameter as the factory pipe that the AFM sits in.

I was hugely worried about this at first, until I heard about some of the altezza guys who tried to run SAFCs to lean out their engines a bit, and the ECU had tuned them out after a week or so driving, and they were back to standard AFRs.
I figured that the redtop should have the same self tuning capabilities, and should be able to compensate for a lower or higher voltage than standard, coming from the AFM signal.
I'm still not convinced that having the AFM in the wrong sized pipe is the problem, as I'm fairly sure that the computer CAN compensate, because the car has been running great for ages.
I've got a spare oxy sensor and AFM, so I might swap them over to see if it makes a difference. I cant remember if I'm using the sensors from the MR2 engine or celica engine.
It definitely hasnt been running poorly the whole time, it seems to run okay intermittedly at the moment, so I'm thinking it might be a wiring issue.
I will probably try and source a factory airbox anyway though, just to see for sure.

Yeah I'm running it on BP or mobil 98 octane.
If you look at the link on the MR2 board I posted, you'll see that some people are getting up to 195hp at the wheels, with just bolt ons and piggy backs. (Or full ECU for one or two of them I think)

Yep I could definitely see how a restrictive intake/exhaust could drop the power a bit, the toms exhaust is 2.5" wide where it's a single pipe, all the way to the catalytic converter, where it's just standard gen 5 SW20 stuff.
There's probably a power gain to be had from ditching the cat and getting an aftermarket muffler etc, but its loud enough already with the pod filter right behind your head.

[CrUZida]

Does an engine even run at an AFR of 21:1 ?

My money would be on stuffed o2 sensor, or bad placement.