IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: Tim Hensley on May 18 2020, 12:05:12 AM

Title: IAC going down
Post by: Tim Hensley on May 18 2020, 12:05:12 AM
I’ve been chasing the dropping numbers for mounts started  25 down to 20 at first then 15. Spraying carb cleaner with no clear leak.Got all the way down to 9 ,keeps have residue around throttle shaft.
I changed it out with a spear I have. The one I took off has .010 play is that a lot?
Title: Re: IAC going down
Post by: Steve Wood on May 18 2020, 12:13:13 AM
I'm no expert, but that sounds like quite a bit.  You can ask Steve Monroe for a professional opinion :)
Title: Re: IAC going down
Post by: Tim Hensley on May 22 2020, 02:07:14 AM
Steve got back to me,should I just do a rebuild or do the 62 MM blade ?
Title: Re: IAC going down
Post by: reality on May 22 2020, 07:03:25 AM
62 without ? Around 7% more area to flow air.
That's not 7% more air it's 7% more area to flow air/
Or think of it like going from a 58 mm Mikuni to a 62 mm
Title: Re: IAC going down
Post by: TexasT on May 22 2020, 08:39:27 AM
I can't see that the money spent on the 62mm upgrade could come close to being cost effective in the performance increase. Everything adds up but for me there are way better ways to spend that coin.
Title: Re: IAC going down
Post by: Steve Wood on May 22 2020, 09:32:22 AM
Quote from: Tim Hensley
Steve got back to me,should I just do a rebuild or do the 62 MM blade ?

Unless, it's a big difference, I would do both
Title: Re: IAC going down
Post by: Top Speed on May 22 2020, 11:55:01 AM
I would open it up and let it breathe easier at this point.
Title: Re: IAC going down
Post by: Tim Hensley on May 22 2020, 01:31:16 PM
The cost is 85 for repairs to the shaft bushing and seals and 135 for complete service and 62 mm.
I think it my be worth the money. Steve has a good reputation.
Car dose run pretty good
Title: Re: IAC going down
Post by: Steve Wood on May 22 2020, 01:58:32 PM
Steve does excellent work for sure
Title: Re: IAC going down
Post by: Scoobum on May 22 2020, 07:04:10 PM
Had one of Steves on my car. Throttle response was kick ass!
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