Making 580 at 6300... Everyone else is revving their engines out to make that. Never seen a dyno from old man, but I'd like to see how his power climbs at redline.

 

Using columbos dyno as a reference, he makes over 600 at redline spinning his blower less, but at 6300 he's making around 520 going by one of his dynos. Im spinning my blower quite a bit harder. Just need to get pass this wall that I'm hitting and carry my power to 7200 at my redline.

 

https://my350z.com/forum/attachments...-577-446_2.jpg

This is old mans dyno he put in the top 50 list.

 

Means, are you and Colombo running the same cams and compression?

 

Yes, the only thing different is his exhaust and his kinetix. Been talking to columbo about this.

 

I think the blower is running out of steam before max efficiency of your engines VE. Step back up in pulley size and rev it out. No sense in destroying a 3 grand blower over 50hp

 

Yeah I actually thought about going with a 3.12 pulley to see how it acted to redline. Was also wondering if I do in fact have c2 cams as I was told I did. Guess I might be digging in soon to find out.

 

Here is my Dyno. It's making horsepower to at least 6800rpm.

This Dyno is Log info from the Dragstrip in 3rd Gear, so the data you see above 6800rpm is a little wacky as i'm backing out of the throttle to shift into 4th gear.

( Note: this Dyno is from last year when I only went 127mph and was very Lean up top. Also only show 16psi as my boost channel was set to 16psi max)

 

Josh, can you post up your dyno?

20-30whp can be just in tune along.

So, you are using a 2.87 serp, 32/28 cog? and Crank pulley is?

93 octane fuel?

 

2.87 pulley
6.12 fluid dampr
32/28
93

Mustang Dyno

 

Soho dyno jet

 

Hi Josh,

I've looked over your dyno's very carefully! I don't know the time difference between the Mustang dyno and Soho dyno, but based on your Mustang Dyno, I'd just through out the info from Soho, just to big of difference.

The V2- Ti Trim HD (Heavy Duty) is a very Tough-Stout blower, you are not going to hurt it!

1. The HP (Solid Red) line in the Mustang Dyno does not fall off hard and pulles to about 6700rpm ( this lead me to believe you may be getting some belt slip )

2. Even at 7000rpm with your setup you are only running the Ti up to 61583rpm. Slower than I run mine and I have a Standard Blower) You are not pushing the blower hard at all, IMO it has a lot left in it. Blower is rated at 26psi and you are making 20psi. That blower is good for the 700whp Range!

3. That being said, trying the 3.12 and running the motor to 7500 would be a good test.

4. Though IMO if I were you, I'd run the motor to about 7000-7200rpm, go to a 34/28 Cog, and a 2.87 serp this will get you 65,400-67,300 blower rpm. Keep in mind that many drag racers run the YSi to 80,000rpm ( 15,000 beyond it's max rating.

5. IMO, I still think you may have belt slip. You could try a 34/28 Cog with a 3.12 serp and run the motor to 7500rpm. And then compairing dyno's would be able to see if you are having slip. This will run the blower a bit slower, so if you make same or more hp (and make the same or more boost), you had belt slip with 2.87 and 32/28 cog setup.

6. Mustang/DynoJet conversion factor is about 12-15% Take 580 x 1.12 = 649whp and 667whp at 15%. And remember a dyno is just a tool for tuning, don't get hung up on the numbers.

7. Only one area that i'm confused about is your 1/8 mile trap speed, this is where getting 1/4 mile info would help you a great deal. If you are shifting @ 6300rpm this makes sense, but if you are running out past 7000rpm you should be @ 100mph or better.

8. All my calculations are based off of 0% belt slip. All Serp setups have some belt slip.

9. It's always a go idea to set your rev limiter just beyond max hp, because even though hp is falling off the car is still pulling.

10. My Stock motor is making Hp to at least 6800rpm. Aftermarket cams you car should pull beyond that for sure.

 

Also with 93 octane your tuner may be pulling tons of Ignition timing out of it, and that just adds to the hp falling off.

Do you have an Ignition timing map to post?

 

The guy who tuned his car last was Hal from Dynosty. He drove and tuned the quickest 350z's (auto world record holder and 6 speed world record holder). He usually puts out some real good numbers. I doubt there's much left on the table.

I thought though Dynosty switched to a dyno jet? In your videos there's a dyno jet sticker...

Anyway, the thing that we need to remember, the edit *bottleneck* on the v2 is the housing, not so much the impeller. I wouldn't be surprised if the point of diminishing return on a billet wheel (ti) is sooner than on a wheel that flows less (sc etc).

What do you think is the safe limit on bearing speed for a v2 t or ti trim?

 

The V2-Ti Trim is a completely new blower (blower side), housing and all, and is now a full HD blower.

I have an old type V2- Sc-trim rated @ 1000cfm and 17psi, and making 577/446 on a totally stock motor.... The V2 Ti- trim is rated @ 1400cfm, very big difference.

Many YSi guys run it 75,000-80,000rpm, that 23% over the rating.... My Blower is rated @ 53,000rpm and I run it to 62,355 without issue for years......(about 20% over)

The V2 Ti-Trim rated @ 55,000 @ 20% over would be 66,000rpm for a ball park.

I would never assume that just because a tuner has a world record holder car that he would tune my car the same way. Plus people make mistakes. The Facts are in the Data of the Tune, nowhere else!

I drive, Built and Tuned my 350z World Record Holding for un-touched stock motor in a full weight car (350z or G35). So what! Does not mean much. All that matters to me is how well does a car run that I've tuned!

 

Also the Ti-Trim is good 26psi plus, Josh is nowhere near that.

The V7 Ysi-Trim is rated @ 30psi, many people have seen 36psi (cast Impeller). and the new Ysi Billet Impeller blower is good for over 150hp more and 38 psi+

 

Well hal post dynos for tons of other cars and he consistently put out numbers that are quite good for the modifications of the cars. He also set the record for FRS at one point too. And the numbers I've seen come out for 350z's have been really good. 580hp considering the IAT's meanZ had is really good actually. If you recall seeing his data log those intake temps were gnarly.

As for the v2, how much bigger is the housing/scroll? It's nearly ysi flow numbers, but I'm sure that housing is going to be the bottle neck. Just the size of outlet being less than 3" is going to make an impact in the power it can produce.

I mean yeah the numbers are great, but there are reasons why people buy YSI's. I'm not trying to say a TI can't make 600whp, but I'm saying you might not get that much added benefit spinning one 10,000rpm over the rated rpm.

 

Yellow bullet guys seem to be going as high as 64k with the ti, but that is on v8 cars making like 800whp.

 

I have a 3.12 pulley on the way that someone is gonna let me borrow so I can see what it does. With my current setup, I have seen 26psi. Just can't ever get that back. I moved things around, new belts, strut brace... Nothing. So I know my set up is slipping hard up top. Hoping with the 3.12 I can get more wrap and reduce slipping up top.

 

how did you record the 26psi? Haltech doesnt read that high. Boost gauge?