xsspeed Posted December 17, 2021 Share Posted December 17, 2021 I might have missed in ALL the detail Did you maintain vvti operational or CR/cams means you can't? Quote Link to comment Share on other sites More sharing options...
Roman Posted December 17, 2021 Author Share Posted December 17, 2021 Yep I've got about 37 degrees of usable range, by putting the cam 1 tooth back and adding a stopper in the pulley 1 Quote Link to comment Share on other sites More sharing options...
xsspeed Posted December 17, 2021 Share Posted December 17, 2021 Ah yes I remember stopper talk but didn't read the solution, shall continue reading Quote Link to comment Share on other sites More sharing options...
87creepin Posted December 18, 2021 Share Posted December 18, 2021 Will you measure out how much material you ported from each cylinder? Driving4answers did a video on this Quote Link to comment Share on other sites More sharing options...
Popular Post Roman Posted December 23, 2021 Author Popular Post Share Posted December 23, 2021 Nah I didnt bother, because the amount of material removed was absolutely tiny. I finished all that and got it all back together. Initial results from looking at the fuel map indicated there was hardly anything in it. Not too surprising as it was all quite good to start with, not gross dregs and machining like 80s tech heads. However I did a new full sweep of cam angles. As I figured if there's any low lift flow benefits it will probably want to close the cam at a slightly different time. This showed some surprising differences. It now wants to keep 35 deg cam advance until 7000, then steps down to a minimum of 15 deg by 9000 So ignore the actual AFR on the below graphs it's just the relative difference that's of interest. So if you follow the red 35 deg line towards the 6500rpm area is where there's an interesting difference. Also a bigger spread of results around the 6500ish area. Usually you see the cross over point somewhera round peak torque, notice on the first one that's just past 6500rpm, now closer to 7000. Then after retuning fuel with these new best cam angles, the fuel map wanted to change positively too. Not much just 1% or 2% sort of thing. No huge gains like changing the intake or trumpet length. It's now looking a little more peaky in some areas, for whatever reason. A before and after on virtual dyno is basically within margin of error. Will be interesting to see if there are any trap speed improvements next time at the drags. So I've now completely run out of excuses for not doing the exhaust... crap. After xmas I will order some parts. Then that's probably as many farts as I'll be able to squeeze out of it. 9 1 Quote Link to comment Share on other sites More sharing options...
deankdx Posted December 23, 2021 Share Posted December 23, 2021 i hope you can make the exhaust sound as good as the intake. how much do you think it will change power, and if it will lose any lower in the revs and then.. will the change affect other tuned parts (aka, will the trumpet length be better longer or shorter or cam timing/ignition advance need changes? ) when i had an XF falcon 4.1Lwith some mild mods(cam, compression, extractors), going from 2.25" to 2.5" made it doughy lower in the revs, this was tuned back, but i don't know what the tuner had done(15yrs ago before i knew anything) 1 Quote Link to comment Share on other sites More sharing options...
Roman Posted December 23, 2021 Author Share Posted December 23, 2021 Was that with an EFI engine or carby? I'm surprised that that much of a minor pipe dia change made it run differently. If the tuner managed to recover the lower rpm, then it must have been a fueling issue rather than a physical change. In which case that's no problem here. I'm not expecting to lose any power anywhere on account of a better exhaust/manifold. Yeah might sound grotty though without decent mufflers. I'd expect it might pick up some midrange if it behaves similar to KPR's testing on 4AGE stuff but we will see. What's there is just complete shit / designed to get heat into the cat converter ASAP with the stubby little 4-1 pipes. Doesnt look like any tuned lengths involved. So I dont think it will lose in any way. 2 Quote Link to comment Share on other sites More sharing options...
deankdx Posted December 23, 2021 Share Posted December 23, 2021 7 minutes ago, Roman said: Was that with an EFI engine or carby? I'm surprised that that much of a minor pipe dia change made it run differently. yeah with a carby, even if he had explained what he'd done it would have been like another language. Quote Link to comment Share on other sites More sharing options...
shrike Posted January 4, 2022 Share Posted January 4, 2022 3D printed an exhaust? Quote Link to comment Share on other sites More sharing options...
Popular Post Roman Posted January 4, 2022 Author Popular Post Share Posted January 4, 2022 Heh, nah. No exhaust until hoist is in place, hopefully not too long but realistically a month or three. In annoying news, since putting the rev limiter up it seems by electric waterpump has shit itself. It intermittently either stops working completely, or, works but then doesnt respond to speed signal from ECU. I'm thinking that possibly the level of vibrations from doing 9000rpm is too much for electronics that are hard mounted to the engine block inside the pump. As its only designed to do 4000rpm or whatever haha. As this is a near new pump, after I blew up the last one wiring it backwards. So that's annoying. I've also wired up a piezo to a spare output on the ECU as a buzzer. So if the pump stops working while the engine is running, it blares out annoyingly. I'm going to order a new pump and then head to nightspeed on the 14th with 9k limiter and some drag tyres. No other changes are likely in the meantime unless I blow it up or something. But would be neat to run a bit lower in the 14s as-is. Longer term if I decide to keep this car/project (I've got 4 more months until wof/reg runs out) then I'll likely switch to a block with mechanical waterpump that will bolt up to my gearbox properly. 11 1 Quote Link to comment Share on other sites More sharing options...
fletch Posted January 4, 2022 Share Posted January 4, 2022 We used to run a misprint with an e13 nissan at 9000+ rpm and had trouble with ewp's dying. They were hard mounted to the motor and the braided wires to the brushes would dissolve. We moved the pump so it just hung from a bit of hose and lasted 2 seasons 2 Quote Link to comment Share on other sites More sharing options...
shrike Posted January 5, 2022 Share Posted January 5, 2022 Actually, what's your rough EGT and what's the highest temp 3D printer filament you can do :p Quote Link to comment Share on other sites More sharing options...
xsspeed Posted January 5, 2022 Share Posted January 5, 2022 Is there a video of this Nanging at 9k? Quote Link to comment Share on other sites More sharing options...
Muncie Posted January 6, 2022 Share Posted January 6, 2022 19 hours ago, shrike said: Actually, what's your rough EGT and what's the highest temp 3D printer filament you can do :p Rocketlab can print in Inconel and are staffed by petrolheads just @ them on instagram see if you can convince somebody to "trial" something for you as a a piping test or something. 3 Quote Link to comment Share on other sites More sharing options...
Popular Post yoeddynz Posted January 6, 2022 Popular Post Share Posted January 6, 2022 Today in the big smoke of Nelson I met 'Old Roman'.... Nicknamed Dave by many of his friends this old boy was truly enthusiastic about his Yaris RS * He's owned it for quite a few years now and loves it to bits. It has a sunroof that slides into the roof - apparently quite rare. Dave is a very practical sort of bloke and values a certain amount of comfort as he fangs about the hills in his road cart. Dave has fitted sheepskin seat covers. "fuck the added weight" he said. "when you get to my age and have spent a whole lotta time sittin' at desk drawing graphs your posterior needs a bit of comfort" "Notice the sunroof- its very rare in these cars" Dave says again. Dave has had many offers to sell the number plate but its staying with the car! His brother also owns a Yaris "but its not an RS" Dave proudly exclaims with a wink. "its also got the slightly larger wheels fitted. Its a good car. I use it for all sorts of jobs and crikey it can haul a load when needed" Yep - Dave's Yaris RS is a bit rough around the edges, just like Dave. But its a good reliable friend to him and for driving fun it certainly offers him much entertainment - just like Dave does for us. "Did I mention the sunroof? It slides into the roof. Very rare!" Yes Dave. Yes you did. Thanks Dave *Dave might not be his real name. But he does also own two Triumph Heralds and a Riley Elf. ** Also thanks to @Roman I am now spotting fucking Yaris's (yari?) everywhere. 14 3 8 Quote Link to comment Share on other sites More sharing options...
kicker Posted January 6, 2022 Share Posted January 6, 2022 For an RS TOY it's a good size to start with, ease you into the lifestyle. 4 2 3 Quote Link to comment Share on other sites More sharing options...
subverse Posted January 6, 2022 Share Posted January 6, 2022 Went for a stroll with the missus last night from our place in Newtown, down to Island Bay. There's at least one Echo/Vitz/Yaris parked every 500 meters between here and there. I wonder if it's a universal constant? Also, there's some Yarisess on my watch list now for some reason, I think you might have started something here @Roman 1 3 Quote Link to comment Share on other sites More sharing options...
Popular Post Roman Posted January 6, 2022 Author Popular Post Share Posted January 6, 2022 As a disclaimer to this oncoming story, and this entire thread - Despite my overwhelming enthusiasm for the absolutely mundane. Yes. Yes I am indeed aware that in objective terms this is not a very fast car by any metric. My work wagon is probably quicker. That's fine. It's not breaking any world records. That's fine. It looks like a melted M&M. Thats fine. And so on. The hilarity and joy from this car though comes from the disparity between expectations and execution. High expectations are very rarely met. Low expectations are easy to exceed. Being an incredibly common, dreary, budget car that's commonly auto and mostly 1300cc or 1000cc. Almost everyone in NZ has had enough exposure to a Vitz/Echo/Yaris/equivilent shitbox to form a fairly robust opinion of how much they suck. I myself drove this car completely standard for about 8 years. So I know. I really do. So to exceed this expectation even by a little, is really good fun. I mean, when I went to the Toyota Festival the guy at the gate was reluctant to let me in when I said I was going to drive it on the track. Haha! Classic. So anyway. My partner has been fostering a kitten, and a local young "car guy" expressed some interest in rehoming it. (Someone I'd previously taken for a drive in the Echo in its current state) After some negotiation I agreed to drive over to his house to drop it off. I drive to park around the back of his house, and there's lots of cars there and a bunch of teenagers looking at me as I pull in. I get out of a Toyota Echo, with a kitten in a crate, wearing some raggedy shit because I'd just been doing some yard work around the house. So not a first impression that screams "Car person" so much as "low tide mark on the poverty line". The guy I knew says to one of the other onlookers: "He brought the Echo! Ohhhh you should race Dave hahahaha" His friend looks the car up and down, and says "Ummm no" with a look of thinly veiled insult. Insulted at the prospect that his car was in any way comparable to something as lame as that. Then he says to me "Dave, he's got a beams Celica" Me: "Nice! Cool." So we go have a quick look at it. Then he says back to his friend: "No really, you should race Dave haha" Then his friend started looking a bit more suspicious, but not quite sure of the situation. I explained that I didnt want to race anyone- just here to drop off a kitten. I think from his perspective, we appeared equally embarrassed and confused by the situation. As in, geez it would be embarassing for me, some weirdo cat man who'd probably not driven fast before to try race a celica and get smoked. Then also why would he waste his time racing an echo? I reiterated that I didnt want to race anyone, but if he wanted to come for a drive, he's welcome. He still didnt seem that keen, but his mates egged him on saying he should. Surprisingly, after being told it had a prius motor in it, with a massive 1500cc big block. He hadnt gained any further enthusiasm. The bonnet stayed shut. So he gets in, and we go down the road a bit like he's about to get Barryed to within an inch of his life. (This part was probably accurate) I keep the revs super low, and drive like uhhh... how you drive an Echo. It just sounds like a standard car while you're driving along normally. I make some chit chat about general car stuff. He starts telling me about projects he wants to do and so on while we amble a bit further out of town. We get to a backroad and I check the mirrors and stop. Foot flat, revs go up, and launch control activates. Dump the clutch. First gear was gratuitously wheel spinny, for a laugh rather than getting anywhere too quickly. Squeals a bit into 2nd. Then we run through a few gears and a few upcoming corners at full noise. "What the fuck! What the actual fuck!" "What the fuck!" "I'm not racing this thing!" "How the... what... jesus" Anyone whos met me in person can vouch for my absolutely punchable smug looking face, at this point I was easily smug level 100/100. Then I go drop him back off and all his mates are having a giggle while he just looks a bit bewildered hahaha. "What the hell. A prius motor. What the hell." And we all have a laugh about it. The end. Also, video as requested 21 17 4 Quote Link to comment Share on other sites More sharing options...
xsspeed Posted January 6, 2022 Share Posted January 6, 2022 The most casual 9k rpm ever Quote Link to comment Share on other sites More sharing options...
deankdx Posted January 6, 2022 Share Posted January 6, 2022 I am always amazed at how well the posts in pretty much every thread on this forum can perfectly describe and tell the events so clearly. 3 hours ago, Roman said: So anyway. My partner has been fostering a kitten, and a local young "car guy" expressed some interest in rehoming it. (Someone I'd previously taken for a drive in the Echo in its current state) After some negotiation I agreed to drive over to his house to drop it off. I was saddened when I first read this, I thought the echo was being rehomed lol.. as I read further I chortled to myself and was well chuffed to see someone getting to experience some glorious dorts 6 Quote Link to comment Share on other sites More sharing options...
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