Have you not been here since the start of the thread?

Bortus said 30psi not 40. If it’s 40 he still should have halted the pull long before 8200 rpm.

If a “tuner” runs my **** out to 8200 rpm at 14:1 I’d be taking my stuff elsewhere. That’s also reason to halt the pull, and only a few minutes to tweak the fuel curve.

I’m not blaming the guy for part selection, or the low oil pressure.

 

Struggle to get 750 fwhp with a ls7.....Wow that's Harsh Launch.

 

I'm sorry, but if you run the oil pressure at 30psi and .95 EQ ratio and turn to 8200... you're an idiot. You're trying to blow the motor so the poor bastard has to pay you and your **** shop more money to fix it.

It's a racket. Plain and simple.

Is there an issue with the Morel lifters? I don't know. But I wouldn't troubleshoot it by going to 8200 RPM with no oil pressure or fuel in the tune.

 

Totally Agree!
This is an Epic Fail.
If oil pressure is a possible concern BEFORE the start of the pull, and you are not seeing 7 PSI X 1000 RPM
30 @ 4000, 42 @ 6000 , 50 @ 7000, Why is it pulled to 8000+????
The pull should have been ABORTED,
Not to mention AFR.
Not just my .02
Bortous sorry for your struggles, I can certainly empathize.
Good Luck

 

It takes literally a minute to add fuel to a tune and you sure as hell don't go to redline your first pull, you work your way up. And if the parts are so terrible, a good tuner will either protect the customer from themselves or refuse the work, not put in "crap" parts and then say "yup, it's broke".

 

It pays to deal with knowledgeable people....

1st signs were A/F ratio....the worst being not doing a break in and as stated increase rpm in 1k intervals.
It its not broke find a better tuner..wishing u the best....

 

I'm not taking sides. I know it looks bad. But the tuner knew the oil pressure was too low, and informed the customer. RIGHT? And I think he didn't want to run it like that, at all. And Bortous might have requested the dyno pull to see where the power is at. Whether he wants to admit that or not, i don't really care. And it was 40psi, which isn't going to damage an engine for one pull. And i think they both knew that.

If the tuner/workshop is taking him for a ride.. different story. But i just didn't get that feeling. If I'm wrong I'm wrong. All I'm saying is had the lifters worked like they're supposed to and oil pressure was above 60psi.. i bet the tuner would have had this thing finished a week ago or more, with proper AFR's, and a decent HP figure, and Bortous would be out enjoying it tearing up the streets right now.

It is like you guys are blaming him for the oil pressure issue somehow. You said you weren't, but that's how it's coming across. If the customer told him to do one dyno pull, he did as requested. He knows it shouldn't be run like that permanently, otherwise they would have obviously finished it sooner. I read the whole thread perfectly fine. What was Bortous first update on this ....

 

Easily doable with good parts. And over here it'll hit $30k to build. The struggle to make 750 comment was me thinking if it's done cheaper.

 

The reason i think you are being over paranoid on this one, is if his tuner wanted to take him to the cleaners and blow it up, why was it a good combination previously? You see my point? I bet on that the owner requested the dyno pull. He wanted to know what power it'll make, and i kind of don't blame him when waiting so long.

Again the factory oil pressure gauge shows 40psi. It's in BAR.. so you need to convert to PSI. Yes it's no good for any kind of long term. But again i think they both risked it for a one off pull.. to see what the new solid roller would make.

If his tuner is a complete ******** and suggests they leave the engine as is and continue tuning it and raping it on the dyno, then yes I'd agree with you. But i don't think that is the case for the several reasons i already mentioned.

 

See this is where you lose me. Put in crap parts? HOW DOES HE KNOW THEY ARE CRAP BEFORE FITTING THEM?

Man.... my point is going totally over the top of some of your heads.

Owner: Has a perfectly fine, strong running hydraulic 408. Tuned by the same guy. Wants more HP.
Tuner/Builder: Makes some suggestions, based on his best knowledge.
Owner: Notes suggestions, comes to forums to get more advice. Decides to go llsr based off all the great reviews.
Tuner: Suggests his preffered solid lifters. Gets handed a cam and some other lifters. Easy swap. Gets it running, oil pressure is f*cked.
Owner: What's wrong and what do we do?
Tuner: I think the lifters must be bleeding oil pressure.

OK, so how was he to know the lifters would do this, if he has never fitted these lifters previously???????

This is just getting dumb now. Bortous knows what needs to be done. He needs to buy a set of solid lifters that someone else has already proven in an OEM block.

He said forced induction or another engine isn't on the cards right now (i think).. so my suggestion, he waits for Darth to finish his LS7, once the oil pressure is good (which i think it will be), he buys those lifters. And direct from Summit racing. No aussie vendors (which they don't stock them anyway). Because you never know, because there was counterfeit (china copies) morel lifters doing the rounds. And a trusted USA seller like Summit won't do that.

 

Launch, thanks for putting things into perspective.
We both discussed the dyno pull and we both knew it would be fine for a baseline pull to see how it goes to test the oil pressure.
There are some folks here who think that the tuner I am using is no good.
This is certainly not the case.
I have been seeing this builder for over 10 years and it was he who saved my engine when I was having issues with it.
Since then, I have been looked after extremely well financially, and through mutual respect and honesty we have a good relationship.
He built me my stroker engine for only $5700 USD using all the good parts plus other optional upgrades and including his labour etc which is far cheaper than anyone else.
I have a lot of respect for his work and appreciate all he has done for me.

There were never issues with the engine upgrades from the beginning until the latest combination.
My last combination was making 370rwkw which when you add on 10% to account for the higher reading in the USA that is about 550rwhp which is very high.
So he definitely knows what he is doing and he has a 7 second drag car to prove his work.
Current combo is revving clean all the way to 8300rpm which is an obvious sign of his competency.
Those 1:8.1 rockers he didn't want to fit them because they were heavier, but I chose not to listen.
If he had his way we would have fitted a different rocker at standard ratio and the previous hydraulic roller camshaft combination would have been fine.
I chose the lifters and wasn't expecting any issues with them.
If I had known I would never have purchased these.
Thanks to a member on here I am receiving a different set to see if they work.
What is happening is an unfortunate case of bad luck.
All these issues because of those damn lifters.
Those that come to assumptions, let them believe what they want to believe.
It is always better to ask questions so you know what is really going on here.

 

Launch you are really making a lot of sense. Only one point I would disagree is 750 rwhp out of a stock cube ls7 is not easily done.

Bortuous, good on you for keeping it straight.

 

Bortous, you told the tuner to take a pull to redline with the AFR out of wack? Seems unlikely.

Launch, I'm not getting into a battle of good parts vs. bad and oil pressure should be blablabla......put ALL of that aside. There is still the fundamental issue of that Dyno pull to redline and the AFR.

 

I'll be that guy and say it, adding 10% for American dyno numbers is true ricer math and I dont believe that you made that with the last combination.
the end.

 

Thanks man. And actually we don't disagree because I never said Rwhp.. If you go back to my original post that Smokey was quoting me on .. i said "struggle to be 750fwhp". So when i replied to him and said 750 is easily done with good parts, i was meaning my original 750 Fwhp figure. Because I knew that's what I said the first time.

Smokey misquoted me and said Rwhp.. and made it look like I was speaking about RWHP when I wasn't. I'd never say or think that 750 rear wheel hp from an ls7 is easily done. That's close to 900 flywheel.

.

 

No problems. Just like I thought. Now you just need good parts.

 

Say it. I have posted the proof with my dyno sheet.
Just so you know the dyno my tuner has is the LOWEST reading dyno I have been on.
The others such as a mainline and dyno dymanics read around 10-15rwhp higher.
Everyone down here knows the dyno jet numbers in the USA are way over inflated.
The Mustang Dyno is somewhat closer to ours but the dyno jets for some reason read excessively high.
This isn't an opinion, it's a fact
Maybe the ricer math you are using needs refining.

 

All good Darth.
We do not have many LS7 combinations as these engines were only a rarity. They only came out in some special edition HSV's.
They make around 430rwkw with heads and camshaft which is 576rwhp +10% which equals around 640rwhp in the USA.
We have higgins race heads who have a Darin Morgan CNC program for the GM LS7 heads.
If I ever go that route, that's what I will do.

 

Something I just found..

." E85 will maintain max brake torque much richer than stoich than gasoline will. But, because of it's excellent detonation threshold(due to lower combustion temps, lower peak cylinder pressures..etc), it can be run much closer to stoich than gasoline safer "

Maybe that's why your tuner wasn't so concerned about getting AFR's correct on the initial pull.

You will gain power for sure when you get some fuel into it.

 

Maybe his tuner knows e85 better than we do. He did a baseline pull well knowing it can't get damaged easily from being near stoich.