Im building turbo ls vtec. I was wondering which is a better choice for it. The motor is going to be fully build.

 

Specs ???????

 

Check these out if ATI or Fluidampr are too expensive!

http://www.optionsauto.com/products.asp?dept=10300

 

84mm cp piston bisi h rods.

 

IMO a balanced bottom end with the stock crank pulley is the best way to go.

 

You really can't be bothered can you ? At least make some effort if you want people to give you advise.

Anyway, my advise will most likely be this : If you have plenty of cash and are not afraid to spend it then go for the ATI. I'm not sure how much a new OEM pulley costs over there but i'd advise replacing it as a minimum if fund are low. Balancing the bottom end is important to BUT harmonic's and balancing are two completely different kettles of fish. I'm not saying a out of balance bottom end won't create its own harmonic's though...

 

84mm darton mid sleeved ls block
Cp piston 9.1
Bisi steel h rods
Stock ls crank
B16 head
Supertech valvetrain
Afi turbo intake manifold
70 mm skunk2 throttle body
Idi 2000 injectors
2 walbro fuel pump
Go autoworks top mount turbo manifold
Tial bov and wastegate
Full race back door intercooler

I'm just wonder if it would be a good idea to run the oem cranks pulley .

 

Bullshit.

After 400whp at the track I would break or flip alternator belts every pass. Switched to an ATI and bam problem solved. Fully built and sleeved and balanced 84x89 ls vtec.

 

I was shattering oil pumps with a brand new oem pulley. Went to an ATI and problem went away.

 

Haha, I've had this problem as well, and some people actually don't believe me that this happened. They said I put the belt on wrong, LMAO!

 

Did u guys use the ati race or street pulley.

 

How do you vibrate enough to loosen a belt but not damage anything important? Crazy!

 

I thought my car was a freak, it has done this numerous times! i finally got it down to having it at just he right tension.

 

Those professional
Product pulleys are garbage better off with oem lol but ati FTW street pulley is fine

 

With a build like yours, ATI is the way.

 

I'd go with the big race version, especially if you run a twin disc!

 

Ok thanks for all the help.

 

Are they really that bad? I practically get wholesale price on Professional Products so was gonna try them out. They're IM and TB work great, I've used them on a few projects, so I figured the harmonic balancer would be good too.

 

Go with a brand that has been proven to work.

 

Yes there junk, OEM is 10 fold better than one of those things.

OEM or ati IMO. the race version isnt needed for 700 or less but any more then that i would def run a race version. the ati street version is still lightyears better than a stock unit and plenty people run stock units on high powered cars

 

I run the street version I asked a few 1000whp guys which one they recommend and they all said street version.

 

+1

Im with you there. Thats what I have on my car. Credible sources have given me the same recommendation.

 

i run an ati race. love it no problems. get it machined like the instructions say...

 

Good Info here. Subscribed

 

What machine work needs done for the race.