I got a Holley 58mm throttle body about a week ago and have had nothing but problems!!! I thought maybe it just threw off the tune a little so I contacted Bryan at pcmforless and he said he does not like that brand cuz the problems hes had with them and I should get a bbk or as&m.
What do you guys think?

 

whats the problem?

 

let me guess, it sticks open around 2000rpm when you let off the throttle under load...like coming to a red light, etc? It also had all kind of issues with the TPS (which was good). I will be receiving my 3rd Holley 58mm in the mail today, Kyle from Holley assured me it's the NEW design and this particular unit he sent me is 2 weeks old off the assembly line. The other two I had were the older style which had an issue with the throttle body bushings which Kyle @HOlley could explain better than me.

I'd call and talk to him, ship it to him with a list of the problems and an receipt (mine was lost in Hurricane Rita, so they cut me some slack) and they'll either fix it or send you a new design.

All that being said I'm using my buddies 10 yr old BBK58mm, looks ugly as **** IMO but runs better than anything I've used before. Contemplating a new AZM Monoblade but more interested in a 90mm w/SuperVic so undecided.

hope this helps a little.

 

Or just port your stocker that owns an aftermarket....no problems here and i ported my stocker down to nothin

 

You hit it right on the head! after I adjusted the tps I went out and got on it a few times and then I was going to take it to the dyno day with my local car club so I put about a half a tank of 100 octane in it and after about 15 miles it started bucking and surging and would hardly accelerate. I guess I should have read up on it a little more before I bought it apparently

 

I got a holley 52 which i posted some stuff on about 2 months ago. I had a problem with the throttle sticking before it hit the stop. This caused me to idle at about 1200-1300 and would make the downshifts rough. I was going to put my stock on again but needed a new gasket. I never ordered the gasket and now about two months later, the idle seems to be okay. Not sure if there was a clearance issue that has worked itself out. But now it idles about 700-800 and has no problems shifting.

I did a little reading before I got the Holley and have heard rumors of the bbk units sticking open at wide open throttle. Search on yahoo or google about it. That eliminated the bbk because something like that would be extremely dangerous. I didn't go with the asm because of the price.

Hope the new tb works well and good luck.

Mike

 

..dude don't believe everything you hear. Not saying modifying certain stock GM parts isn't the best route on some things but for the subject of this post I assure you porting a stock TB doesn't "own" an aftermarket unit.

 

I'd send it in, ask for Kyle, tell him you had the same problem I did, I can shoot you my info or whatever, he'll take care of your problem.

 

i would have to say when comparing a bored stocker to 52mm to a aftermarket 52mm TB, id rather go with the bored stock unit. Im sure it prolly flows just as well as the aftermarket unit, and you wont have TPS or idling problems.

Now as for the holley's my friends had 2 and both have the same problem. It seems they like to open more than 90* and that will cause a TPS overvolt, and make the car go into limp mode. His solution was he designed a stop from work that will only let it open to the correct angle..

 

They problem are the blades. They aren't actually circles they are CNCd so the edges actually are flat and triangular. I had the above problems (surprise) and endedup sanding the edges good, so that it's actually round now. I could actually see where it was making contact with the bores... It's a well built piece... but they need to work on thier design.

 

mine stick aroud 1300/1200 and goes down to 900 after a complete stop. I just learned to live with it

 

well I learned something new about stockers being bored to 52mm I guess, that's pretty cool you can do that.

My BRAND NEW HOLLEY 58mm came yesterday, wow what a work of art, sure is purdy, if only it'll work good this time. According to Kyle @Holley it should not give me any more problems.

here is the deal though...think I want to sell it like it is, brand new, in a box, never used...and go to an AZM Mono....hmmm...I'm kicking it around, if I sell it I'll post a link to the FOR SALE section.

 

What about arizona speed and marine 58 mm's has anyone ever had or heard any problems with these?

 

haven't heard, I'd think they were a first class product, but for the price might as well get the monoblade...well considering if someone had a build to utilize it's full potential.

 

Man it has been 6 years and they still have not fixed there POS design...some things never change

 

Holley did redesign the 58mm just for the posted reason. In fact they supposedly made this change about 2 yrs ago. I think they should have done a recall on the old models though but am sure the loss didn't constitute the effort so they sold all remaining stock.

 

But i still need to knife-edge the blades...too lazy and ran out of time origianlly

 

I wonder if I could just send back the holley and pay the difference for a as&m?