i took my lsv turbo to get dyno tune yesterday. At first everything was fine then at the end my vtec stop working.The tuner told me it was cause i was loosing oil pressure so he did a couple more runs on the dyno to try and see if he could get more power.Then just straight took it off.My friend said when he was backing off the dyno he heard a knocking noise, but it went away so he ignored it.So i drove it to my friends house to find out the reason the vtec was not working was cause of the vtec solenoid had some metal shaving in it.So i clean'd it put changed the oil/filter.Then i started it up and it had a loud knocking noise then seized up after 15 seconds of running.

and heres whats done to the motor
rebuilt bottom end
arp rod bolts and head studs
new rings (honed cylinders)
acl bearings
the head was stock
everything was torque'd to spec as arp recommended

also i did drive the motor for 200 miles before i took it to get dyno and it ran fine
so did i do something wrong?

 

Wow, your tuner just ****ed your engine and you can't do anything about it.

 

I would have run it for a lot longer than two hundred miles before pushing it hard like that. I would have put a base map in the ecu run it very easy for a few thousand miles then worked on fine tuning

 

to me thats what it seems like but like you said i cant do anything about it i want to find another tuner but i did post a thread on where i should take my car to get it tuned and no one really help'd out so if anyone knows someone good or can point me in the right direction i would greatly appreciate it

 

i know of people building their motor then towing it to the shops to get it dyno'd with 0 mileage im pretty sure the break in it on the dyno but only for a couple of miles

 

Why wasn't the engine shut off immediately when the oil pressure dropped? That seems to be the critical mistake that was made.

 

Lets not jump to conclusions... This guy drove an untuned turbo honda for 200 miles.

his tuner could have verified it was low oil pressure issue and "Then just straight took it off". People love to mix words so that they can direct the blame on to tuners.

Did the OP do anything wrong? The only way to know is to have a knowledgeable person take the motor apart and see what they have to say.

 

Yes, sorry. Should have clarified. OP should have broken in the engine more which probably lead to the problem. BUT, if in fact, the tuner saw a dropping oil pressure, then worked the engine harder, the tuner is a dumbass.

 

i broke the motor in without the turbo for about 50 miles then drove there to get the motor dyno'd and i did not floor it at any point b4 the tune

and nope you did not get words mixd up he said the oil pressure drop'd and im going to do a couple runs then ill see what happens and it did not make anymore power i dont know much about tuning since this is only my 3rd time with the same person and this is my second lsv
when i built this motor i had my friend double and triple check everything b4 i put it on and he has built alot of motors he will be there to look at what happen when i tear the motor apart and so will my dad which is a mechanic


also im not mad at the tuner it is my fualt for taking it to the tuner even though i heard bad things about him and even though i heard personally this guy talk sh*t on peoples cars so im not mad i just want to make sure i get it done right next time so i dont go through the same problems

 

im not sure i would like to know as much about tuning as possible so next time i can look for what is being done wrong he told me it was going to be ok to drive on

 

Actually it is BOTH the fault of the tuner and the OP. As soon as there was a report of dropping oil pressure BOTH of you should have put a stop to the tune right then and there.

 

and yeah i was also wondering what do i need to know so this wont happen again next time since my friend has a extra block and is letting transfer my stuff to his block

 

Well until you identify the point of failure it's anyone's guess. My guess? Oil pump.

 

ok everyone saying you didnt break it in well look at these guys that fully blown honda drag cars they dont break there stuff in the build it and throw it on the dyno and push it to the max. your motor didnt seize do to break in. i almost bet it seized due to eaither lack of oil or oil pump went out and thats why vtec didnt pop. my friend had a built lsv and he went threw bearings like crazy due to lack of oil he got luck and didnt keep running it.next time you build investe in a oil gauge they are worth every penny and can save motors.

 

Oil or build issue. I wouldn't be pointing fingers at a break-in period.

 

well yeah i pulled off the head and i got the crank to turn im not sure if it helps anything but hopefully it does

 

did you loc-tite the two 10mm nuts holding the oil pick up tube on? if not or one is loose when you drop the pan the engine sucked air

 

no i never lockd tight those two bolts and never had a problem

 

Sounds like you spun a bearing. You guys should have called it quits once you seen the oil pressure drop. You might get lucky and be able to just throw a new set of bearings in. What oil pump are you using? Ive never had any problems with LS or B20vtec that I've put together.

 

i was using a b17 gsr oil pump and my friend has built 2 or 3 b20v's or lsv's and has not had a problem also (the one i let double check everything b4 i installed) he was also there when i installed the parts and the motor did not have any problems till it got off the dyno

 

Hmmm, im not really sure I would trust such an old pump. I usually use 98+ oil pumps (usually GSR/ITR), and never once had a problem. I'd just tear it apart and see how bad it is, thats about all you can do now.

 

yeah i did that but it was raining so all i got to do was pull of the head and the car is at my dads house which is a hour away so its kinda sucks being a hour away from my car with no running car of my own

 

i dynod my b20v turbo...without breaking it in..
but i changed every single part on my motor
and tuned it with eriks...


dont know what the problem is but take it to a reputable tuner the 2nd shot bro..

 

yeah i plan on taking it to another tuner but i dont know of any good tuners around here i might just have to drive it there and let you take me to eriks hahah

also i drove my motor for 200 miles if my oil pump was bad shouldnt something have not work or broke form the beginning or if it was the way i built it wouldnt have something gone wrong b4 i got to the dyno also ?

 

man this time invest in a oil gauge they save motors and will let you know if oil drops pressure cash in the long run