Built engine installed but not running right. Need guru's help! *HD Video*
- Thread starter MarkIII4Me
- Start date
I bought the longblock off of a SF member years ago. Claimed to have dumped nearly $10k into it at the time. He ran it for a few thousand miles with a 76mm turbo and made nearly 700hp. Of course, he was on standalone. I put on a factory manifold, bolt-on turbo and 1jz FFIM but that shouldn't affect the internals any. I have check no clearances as I didn't see any reason why they would be out of spec from just sitting around. Do they sound out of spec?
Mine did this when they were out of spec and left the valves open. Since it ran fine before, the only thing I see what you will need is a standalone.
Have you checked for any vacuum leaks? Also, what cams are in there?
Have you checked for any vacuum leaks? Also, what cams are in there?
I wouldn't think there are any vacuum leaks seeing how it pulls nearly -22psi at idle. Also, I'm running a vpc so air is only metered after the throttlebody. The cams are supposedly raised stock cams, but I was never sent the specs. I was told it was pretty mild and they were modified to produce more top end, so I don't think I'll get much benefit out of them with only a 62-1 bolt-on turbo. Valves are stock since the head was ported so much, they were afraid to weaken it anymore by putting in oversized valves for only marginal gains.
That's not an issue. I am sure you could mock something up to get it to read. You don't want something to make it run perfect, but just a setup so it can read and give a good signal so the stock computer can run off of it. It might just show that the VPC is bad.
Spoke with Peter over at ISP in Beltsville MD yesterday. He agrees that standalone is the way to go at this point. I'm not arguing with that guy. So I'm taking the dive into AEM since it is supported the most. Should be around $2500 for the hardware and tune. Can't say I'm dying to squeeze my pockets dry, yet again. But this build has taken far too long and needs resolution already. Hopefully I can make a few bucks back on my old piggyback setup.
I got a call from Peter last night saying the car is done. Can't say that I'm not more than a little disappointed with the output. Since the engine is pretty much a drag engine and I'm running a bolt-on turbo and 550ccfuel injectors, it runs out of fuel at just over 5000rpms. The head outflows the turbo, so the internal wastegate can no longer control boost past 21psi. You can't even rev the damn thing to where it needs to be to make power. So I'm on making 415rwhp@5300rpm at 21psi on a very conservative tune. All things considered, there's no reason to push the turbo and injectors any further. I pick the car up Thursday, so I won't have a dyno sheet, vids or pics till then.
There were all sorts of little issues with my car. Leaky IC pipes (that needed completely redone) , efan rewire, dh61 ignitor rewire, replace faulty GM Map sensor with AEM one and some other odds and ends. All told, it cost me $1000 over what I projected, however, it could have been a whole lot worse. Many thanks goes out to Peter and the ISP Racing crew. I can't wait to finally drive this thing.
There were all sorts of little issues with my car. Leaky IC pipes (that needed completely redone) , efan rewire, dh61 ignitor rewire, replace faulty GM Map sensor with AEM one and some other odds and ends. All told, it cost me $1000 over what I projected, however, it could have been a whole lot worse. Many thanks goes out to Peter and the ISP Racing crew. I can't wait to finally drive this thing.
Well enjoy it for the time and save up for a nice Precision 6766 billet ball bearing turbo and injectors/rail/pump setup and then you will make way more power.
Well if you have cams and a really good ported head and you said it was a drag motor, it will spool the 6766 really easy.
Yeah, but I apparently have the wrong motor for what I was looking for. All I wanted was something that was reliable that could hold over 500hp. What I got was an engine that is setup to only make power with a monster turbo on it at high rpms. Kinda sucks, but it is what it is. 
By the sounds of things, you don't have any problems that can't be solved with a different turbo and some bigger fuel.
With the standalone in there, your injector size really doesn't matter as much anymore. I'm running 890cc injectors AND water / meth injection on a car that's only putting down 568 rwhp - the larger injectors just mean you have lots of headroom in the fuel category.
As for your spool... the turbo you have on there is good for one reason: it doesn't require a lot of work to get it to bolt up. If you're looking for spool or power, there are better units. Significantly better units, to be honest. Did you port the wastegate flapper hole on that unit? The Turbonetics units *really* need that - I ported mine by a LOT. Even if you did, you're probably still better off - a lot better off - with a different unit with a proper external wastegate, and a BB center housing. For example, my 2J hits full boost at ~4k rpm - on a much bigger turbo than my 7m with the Turbonetics bolt on. The difference, as fas as I can tell, is between the turbos - one is very similar to yours, the other is a PT 67mm dual ball bearing unit.
With the standalone in there, your injector size really doesn't matter as much anymore. I'm running 890cc injectors AND water / meth injection on a car that's only putting down 568 rwhp - the larger injectors just mean you have lots of headroom in the fuel category.
As for your spool... the turbo you have on there is good for one reason: it doesn't require a lot of work to get it to bolt up. If you're looking for spool or power, there are better units. Significantly better units, to be honest. Did you port the wastegate flapper hole on that unit? The Turbonetics units *really* need that - I ported mine by a LOT. Even if you did, you're probably still better off - a lot better off - with a different unit with a proper external wastegate, and a BB center housing. For example, my 2J hits full boost at ~4k rpm - on a much bigger turbo than my 7m with the Turbonetics bolt on. The difference, as fas as I can tell, is between the turbos - one is very similar to yours, the other is a PT 67mm dual ball bearing unit.
Yeah Grim. The wastegate opening is ported as large as it can go. So much so that I had to have the flapper adjusted since it was getting hung-up on the edge of the ported opening. I can't understand how the turbo won't produce more than 21psi and how I can only get 415hp out of 550cc injectors. I just found out that they set the AEM for 440cc injectors since my 550cc's don't seem to be flowing for shit. They have been flow tested at matched within 1% and have zero miles on them. They are Nippon Denso's out of an old turbo rx7.
Any idea what's going on with my setup? How much did your 60-1 hifi produce?
Any idea what's going on with my setup? How much did your 60-1 hifi produce?
I never put my 60-1 on the dyno... I was still adding parts when my 2J car went up for sale, so I bought that and paused everything on the 7M car.
415hp out of 550cc injectors isn't unreasonable at all. Actually, that's pretty good. Go here: http://www.witchhunter.com/injectorcalc1.php4
Now plug in your variables...
horsepower at the crank = 475
number of injectors = 6
B.S.F.C. = .60
Max Duty Cycle = 80
Hit Calculate, and it shows you what size fuel injectors are suggested for the power level you already have... and you'll notice it's suggested larger than 550cc already. According to conventional wisdom, 550cc injectors are only good to ~420 bhp, or 365 rwhp. Now I'll admit they are a bit conservative in their calculations, but you're already a fair bit over their defined line.
415hp out of 550cc injectors isn't unreasonable at all. Actually, that's pretty good. Go here: http://www.witchhunter.com/injectorcalc1.php4
Now plug in your variables...
horsepower at the crank = 475
number of injectors = 6
B.S.F.C. = .60
Max Duty Cycle = 80
Hit Calculate, and it shows you what size fuel injectors are suggested for the power level you already have... and you'll notice it's suggested larger than 550cc already. According to conventional wisdom, 550cc injectors are only good to ~420 bhp, or 365 rwhp. Now I'll admit they are a bit conservative in their calculations, but you're already a fair bit over their defined line.
Cool. Thanks for that Grim. It's a shame that I can't just slap in some 1000cc injectors and rev my motor higher. However, with the turbo already maxed-out, it's not worth the expense or re-dynoing for maybe 15 more horses. God I sure hope this car is a blast to drive as it sits. I can't dump any real funds into it for a while if ever. My wife lost her shit when I told her about what I owe for the standalone and tune. Lol
Wives seem to do that... remember to point out a few things, like the price of a new car - pretty much ANY new car these days, but pick something average, and add up the costs. $20k doesn't buy you much car these days, but it sure makes a nice Supra!
Also, the next step is comparing it to other cars in the same kind of class. So you are at about 475bhp, right? That puts you in direct competition with:
530hp Nissan GTR, $90k
505hp Chevy Corvette, $75k
510hp Aston Martin V12 Vantage, $184k
570hp Ferrari 458, $225k
345hp Lotus Evora S, $80k
500hp Porsche 911 turbo, $138k
Just to name a few. You only need a few more ponies, and you are going to be sitting behind the wheel of something faster than virtually any mass produced, unmodded vehicle on the road.
There are *very* few things that girls like better than a good value. Remember the old adage: A man will pay twice what something is worth if he needs it. A woman will buy something for half it's value even when she *doesn't* need it.
Also, the next step is comparing it to other cars in the same kind of class. So you are at about 475bhp, right? That puts you in direct competition with:
530hp Nissan GTR, $90k
505hp Chevy Corvette, $75k
510hp Aston Martin V12 Vantage, $184k
570hp Ferrari 458, $225k
345hp Lotus Evora S, $80k
500hp Porsche 911 turbo, $138k
Just to name a few. You only need a few more ponies, and you are going to be sitting behind the wheel of something faster than virtually any mass produced, unmodded vehicle on the road.
There are *very* few things that girls like better than a good value. Remember the old adage: A man will pay twice what something is worth if he needs it. A woman will buy something for half it's value even when she *doesn't* need it.
hey "markIII4me" what did you need to put that 1jz manifold onto the 7m?was ita a bolt on? or did you just replace the top portion of the manifold? and what about the harness? just tired of my 7m intake manifold and when i saw this,i was like "sweet!" haha
peste noire;1797529 said:
Kind of curious on this two.
One point about 550's.
I've seen people making over 500hp with them although i never would do that my self it has been done.
Also making 415whp is not bad at all but as you said you are on a conservative tune. can i ask what AFR's you are at under boost?