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Saweet. Can't wait to see some roll race comparisons. Your butt dyno should be pretty dialed in at this point as well, so that will be a good secondary measure.
Saweet. Can't wait to see some roll race comparisons. Your butt dyno should be pretty dialed in at this point as well, so that will be a good secondary measure.
So far I've just been around the block . It feels ...........ok, at low rpms . Want to put a tank of gas through it and replace the manky midpipe before doing any tuning or roll racing.
Did my favorite road today, had a blast just staying under 5k rpm . Who says running an engine in has to be boring?
Put 160kms on it. Def. not getting as hot as it used to, but still hotter than I'd like (up to about 96C).It is a hot day though .......26C.
I have underside of Rad filled but putting foam on sides of radiator should help.
Performance is nothing special below 5000.
Did my favorite road again yesterday but this time didn't worry about revs (still below 7000) . After that (just under400kms) I figured that was as much running in as it needs. Compression is good, hot and cold starts excellent.
So ............started tuning.
Bearing in mind second hand housings/stock intake/stock coils/stock exhaust manifold/poor exhaust system ...... it's performing about the same as any other strong Renesis with free flowing intake/exhaust.
Although I haven't done any roll racing yet ..... from logs ....it's about the same as Bluey up to 8500rpm after which Bluey still has the edge.
Next move : fix up the manky midpipe then possibly swap over Bluey's free flow catback.
Overall I'm pleased with how it runs but from a power perspective ...... I'm expecting small improvements from where it's at now, but nothing spectacular. There is a chance it will outperform Bluey (below 8500) by a small margin and if so It will be a success as far as I'm concerned as that car has already proven itself.
Log Silver vs Bluey (blue line) in 2nd gear at same IAT. Note how Bluey makes more power from vertical blue line (8500rpm) onwards
Looks like my exhaust from back in high school. My brother and I had to weld up a pipe with our welder with a broken feed switch. I had to jump wires together to feed while he welded.
So .... I tested again after fixing the horrible midpipe . Result : absolutely zero measurable difference. Damnit! Felt sure that abomination was causing some power loss but it seems not.
Want to wait till I get a chance to retest at below 20C ambient so I can get a more direct comparison to post up but the weather isn't playing nice atm.
Finally managed to get a log in Silver at same IATs as the Bluey run. Result : Silver has the better mid range , Bluey is better up top. Combined it looks like they make it to 9000rpm at the same time but I suspect Bluey will still have a slight edge with its higher redline.
Dyno . midrange rpms look really good with it fading at high rpms . Not much different to stock. The engine actually feels better than the numbers suggest because it runs so smoothly at high rpms (thanks to Brent Curren from Curren Brothers Racing for the top quality engine build!)
Hoping to get a roll race with one of the local lightly modded 8s over the weekend.
Update : Didn't mention it before but in fixing the midpipe I ended up with a louder exhaust and a rasp I didn't like . So I had another go at it ... put the old resonator I'd cut out (which I thought was knackered but as it turns out .... it wasn't) back in and redid the pipe . Result was a great sounding exhaust - not too loud and no rasp . Very happy with that now.
So yesterday, I got one roll race with a recently rebuilt 8 with boltons ( header, HKS hi-power, AEM intake , pullies ) vs Silver with just the porting and a catback.
Third gear pull from about 4500 on to redline. Jumped early and got 1/2 car start before he hit the throttle. Early on I def felt I was slowly pulling away but then he just stuck to my bumper the rest of the way to the redline.
Need to do a more controlled race from lower rpms to get a fuller picture but I suspect this engine does have a strong midrange. Higher in rpms there appears to be nothing much extra.
I roll raced the same car in Bluey recently and Bluey was equal through midrange but pulled away higher in the rpms.
Tried the setup with no catback a few days ago .... was a bit harrowing due to the extreme drone and being on the lookout for the po pos.
Result : Apart from the horrendous noise .............. made absolutely no difference.
So that's as good as it gets for this setup ..... some minor low- midrange improvement from the primary porting only. None of the porting done on the outer plates seems to have made any difference at all.
Combining the larger primary port of this engine with the small pp on Bluey's engine would give the best overall performance I believe. But the gains are too small to make it worthwhile doing another engine.
Was waiting for that inevitable comment. I think of it more this way ............. no-one has ever made significant gains from this engine, so when I had an idea that I knew hadn't been tried before, I thought it was worth a shot.
I’ll just add that even that amount; which bhp is at the flywheel not the rear wheels, was accomplished by a pro rotary race engine builder with a lifetime of experience. And it came at the expense of of even shorter side seal life and also over many engine builds tested on an engine dyno.
otherwise welcome to my world going back to 2006 when I first put forward the idea that an engine without intake-exhaust overlap had no real possibility of exhaust pulse tuning. You think I’m giving you crap compared to all the posts I’ve endured over this engine since then? You can’t see that afar off to either know or perceive the truth of all those scorners who since came and went. Yet a few are still here, like yourself.
but what you’re overlooking more than anything is that it’s your incorrect perception about how this engine works that’s misleading you into expensive, yet fruitless ventures. As much as you’ll hate the idea of accepting that it was me who put it forward, until you fully grasp and understand all that was detailed about what makes a Renesis different per the hybrid GSLE-Renesis theory posts then you’ll always be on the wrong path and ending up on dead-end streets.
but keep believing that the only way to find out is to try it when in fact how sound the understanding is behind the idea is what makes the difference. Every time I failed at something on this engine it was for that very reason. Yet people here still refuse to accept or see it that way. Ok, continue digging deep holes and ditches for the fun of it then.
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I'll just add that not much innovation ever happens by sitting on ones **** and just believing everything other people tell you. This was a different idea as was the PP exhaust . Both ideas had a small positive effect so I learned something. Maybe that will be useful maybe it wont.
yeah, some people who can’t recognize the obvious always have to find out the hard way, others think they’re smarter than they really are, some are just too bullheaded to either know or be shown any better, and some are just plain dumb.
if that were true then why would I be sharing the information and advising people not to go there in the first place; since 2010 btw? A house that works against itself cannot stand, but will instead fall upon itself.
you refuse to accept it because of who it came from, and nothing would pleasure you more than to prove it wrong. It’s not my ego that is in contention between us, but your own. Because I admitted from the beginning that it didn’t come from me, but from someone greater than us both. I can admit to that and you never will.
Which clarifies the point beyond all measure. Not just on this petty situation, but the same regarding the Creator and Father of us all. It’s him and his power that has you in derision, not his lowly and powerless servant.
Again, it’s all about the understanding; the chart below is what you’re trying to improve upon. That’s a pretty lofty goal to raise those percentages by such crude methods. Especially when the proper understanding is lacking. A person can’t get to that understanding when they’re in complete denial of it though, i.e. loving darkness rather than the light.
No, the truth does not abode in such a person, but only darkness, and how great that darkness is. Yet the truth is the only thing that can save them from their own ignorance of it. This deception within their self cannot be overcome their own except the highest power reveal it to them. That person has to come to that truth first before any other can become known and perceived. Yet they often will still choose to deny that one and set their own fate. .
I would say the same about the pride, vanity, and arrogance that drives a man’s ego to his own ultimate failure, but you won’t any more deny yourself of that than I will deny myself of the other. Unlike Kevin, I won’t take a knee to either this world or the deceivers born of it.
Take heed to this: the one thing nobody ever calls me is “lukewarm”, and the one thing they never say of me is, “his salt has no savor”. Having the ear to perceive what isn’t said is perhaps better than the ear that only hears.
Or perhaps you intend to sail around the world ten times to prove it’s round and not flat because somebody knowledgeable said so? What do you think you know that was not learned or taught to you in some way, shape, or form by someone … or even something else?
A wise man doesn’t have to put his hand on a hot stove to prove it will burn him, but don’t take my word for it; go jump off a high building to prove you can’t fly either. Because that’s pretty much what all your words and thoughts here amount to; you singing like a bird about a flight of fancy, then jumping and falling to the ground.
Just as I’ve done many times. My issue isn’t that you fell to the ground, but that you fail to recognize or acknowledge why you fell to the ground.
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12-29-2022, 06:21 PM
.......26C.
