DOH! We killed the 450sx!!

[autoworkz]

We started doing some dyno runs with the 450sx (vh45de in an s13) best we got out of it was 180 hp. seemed like it was pulling timing alot. after a few steady state runs we heard the death groans, .... rods a` knocking..... poor thing. we were gonna just throw some bearings in it and see if we could save it but she`s gotten progressively worse.

The dyno on the other hand is bad ***. steady state load at whatever speed or rpm you want for tuning.

[defrag010]

do you have an idea on what caused the bearing failure?

[Mettler]

Hahah I think there's video evidence of that :p Repeated high rpm thrashing or something... Autoworkz: did you guys just dump the motor straight in, no rebuild or anything first ? (That's what I'm doing with mine :S )

[autoworkz]

we pulled the beast from a junkyard. pulled the heads off and cleaned the sludge out. they were pretty bad. really doesn`t surprise me, it was obviously not taken car of. and the way we have treated it hasn`t helped. "oh, you wanna go for a ride?" crank it up, peel out in reverse, slide out of the parking lot, 80 mph down the back road, same thing on the way back. it had a rough life.

[hannibal]

I'm sure it was fun while it lasted. Youve done the hard part already, so I assume youre gonna drop another VH in there.

[maxnix]

I'm sure it was fun while it lasted. Youve done the hard part already, so I assume youre gonna drop another VH in there.

Well actually he gets to do the hard part again. Hopefully he will rehabilitate the engine while it is out of the car so it will last longer.

Oh, to have that much time again.

"Youth is wasted upon the young." Oscar Wilde

[elwesso]

Im sure the engine is easier to pull out of the 450sx than it is to pull out of the Q!!!

[sultan]

180hp is more than my q45 dyno'd of course it was 100 degrees out and car was (still is) throwing the knock sensor code. bad ks really pull timing bad

[autoworkz]

so i have learned.

i dunno, we have a z31 sitting around, might throw the vh in there, just for ****s and giggles. and put the vg in the s13!

[maxnix]

180hp is more than my q45 dyno'd of course it was 100 degrees out and car was (still is) throwing the knock sensor code. bad ks really pull timing bad

There is a voice from the distant past!

[elwesso]

we pulled the beast from a junkyard. pulled the heads off and cleaned the sludge out. they were pretty bad.

Thats the million dollar statement right there... VH's do NOT hold up to abuse that is for sure (and witnessed first hand by me)

Sultan... I thought maybe you had moved on to better places (or things), glad to see you still lurking among the shadows

[Jeff Williams]

180hp is more than my q45 dyno'd of course it was 100 degrees out and car was (still is) throwing the knock sensor code. bad ks really pull timing bad

When I recently took Lola to the DynoJet, she pulled a 244 RWHP peak. This was with 103 degree air sucking into the air filter. The room was about 85 degrees.

[autoworkz]

so actually around 207 - 219 hp. Dynojets read 10-15% high

[riu]

i can't wait to see the revival of the autoworkz VH

[autoworkz]

we took the crank out yesterday, left the engine in the car to do it, going back in will be a whore. we are having all the journals turned and all new bearings. i`m believing now that the cause of the spun bearing was the poor maintenance the motor got in it`s previous life. she`ll be back terrorizing the roads of tampa by the end of next week. hopefully all will be well and she`ll be kicking out the proper hp numbers.

[Jeff Williams]

so actually around 207 - 219 hp. Dynojets read 10-15% high

I was thinking that this particular dyno was actually reading a bit low. I believe the car should be around 260 RWHP with the NICO ECU, exhaust, and intake that is on it. That is, utilizing a 17% driveline loss for the transmission and independen rear suspension. That doesn't even take into consideration the NICO stickers that are on the car (everybody knows that NICO stickers add 20 to 30 HP each )

We took off the SAE corrections and filtering, it bumped up the peak to about 258 RWHP.

The net output really depends on the software settings, the calibration of the dyno, and the operator. There can be as much as 20% differences on any dyno. The same dyno, run by 2 different operators can net a different result. My 3 pulls were as much as 10% different each time.

It is hard to compare any individual chassis dyno with another one. That is kind of like comparing any single car with another of the same make and model.

The best thing to do is get a baseline, then make changes, and see what the differences are.

What kind of dyno are you using for the 450SX?

[autoworkz]

It is hard to compare any individual chassis dyno with another one. That is kind of like comparing any single car with another of the same make and model.

What kind of dyno are you using for the 450SX?

it`s hard to compair lower end dynos like dynojet or any other enertia dyno. our dyno dynamics dyno takes intake air temp, temp, humidity and barometric pressure into account when making runs or tuning, that way each time you run on our dyno, your numbers will be consistant. also, it doesn`t use big weighted drums as "rolling resistance" it uses a infinatatly variable "eddy current brake" to make resistance. DD dynos don`t have the "user error" factor. this is evidant by the "shoot out mode" dyno dynamics has a shoot out compitition, held at different shops, around the word, on their dynos in shoot out mode. they can only do this due to the accuracy of the dyno and correction factor for the weather.

i digress...i could talk about the superiority of a dd dyno all day...

we put the crank back in last night, with all new clevite bearings, rods and mains. the old ones were chewed up due to abuse in it`s early life. no more junkyard vh45`s for me, unless it gets a full rebuild. should be running in a day or two.

[autoworkz]

the operation was a success. had the crank all turned and all new bearings put in. that thing is damn heavy to try and install with the motor still in the car and making sure all the pistons get lined up. we did note that the lopey idle seems to have evened out noticably. not what i would have expected from new bearings...

oh and, don`t try this at home. we are professionals.

[audtatious]

Sounds like a fun project. The 240 is already light in the rear, what are the additional disadvantages with a heavy V8 in front? Just wonder if it plows more or steps out more with the additional weight.

[autoworkz]

the vh is ~ 80lbs more than a ka24de so not to big of a deal, also a little more weight up front helps with the drifting. certainly no understeering going on. it`s actually a joy to drive (or was till the stock shocks blew out, coilovers coming soon.

[riu]

you were running stock shocks on the 450sx? wow... i'm just amazed.

[autoworkz]

they were holding up nicely till we threw some megan springs on for the dg trials drifto event. blew them out so bad that they were leaking on the floor. the project funds ran dry before much suspension happened. i am now funding the project personally. problem with that is i used to make my fun money doing side jobs. there are no side jobs now and the shop makes all the money and since i`m not paying myself yet funds are still low...

there are some items i can make so i`m gonna start on that soon.

btw, mattback vass from En Juku fame drove the 450sx at the dg trials with crappy suspension and all. he said, quote "it`s too easy, it`s no fun to drive cause it`s too easy"

[driftin2trance]

why did it make that much of low power?and i thought VH motors are strong and could have taken the abuse if it was properly maintained, right?

[elwesso]

the VH can take it easily, but he said earlier that it was sludged pretty bad, which means oil change intervals were no good...

VH dont hold up well to 7500+mi oil changes!

The motor creates 90% of its peak torque at 2000 RPM!

[driftin2trance]

oh ic, i just saw ur statement and undestood it as the motor wouldnt handle the abuse not just beacuse of the condition the motor was in but the way the motor was. thanks for clarifing.

[slipperypanda09]

um... noobed out question, is i30t fr or ff?

[elwesso]

um... noobed out question, is i30t fr or ff?

Pull the E brake, hit the gas, and find out!

[Florida240sx]

In a controlled enviroment of course

[audtatious]

um... noobed out question, is i30t fr or ff?

FF

[anyotherone]

Whoa... 2006 thread back from the dead!