525sc dominator 1050 carb question
I need to know if the stock 525sc gen 6 carb (dom 1050) are already boost reference? I dont know how to determine if it is or not boost reference.
Also what is the right procedure to determine if you have the right PV on a boat engine? |
I may be wrong but i thought boost reference only matters in a "blow through" application......
|
fixx
Originally Posted by supermx96
(Post 3709891)
I need to know if the stock 525sc gen 6 carb (dom 1050) are already boost reference? I dont know how to determine if it is or not boost reference.
Also what is the right procedure to determine if you have the right PV on a boat engine? also see if it has 3 air bleade jets per ventury or 2 air bleeder jets.. |
Not boost referenced and I don't feel its needed for them. They run like an efi when properly adjusted.
The stock 6.5PV's work just fine in them. I had a bigger roller cam and was running almost 8# of boost and it idled and ran perfect. |
Originally Posted by Griff
(Post 3709957)
Not boost referenced and I don't feel its needed for them. They run like an efi when properly adjusted.
The stock 6.5PV's work just fine in them. I had a bigger roller cam and was running almost 8# of boost and it idled and ran perfect. I will take some A/f ratio # this week end see if i am ok |
Originally Posted by supermx96
(Post 3709990)
That is for an upgrade 525sc with aluminum and b&m 250 blower and now i am in tuning of that engine and dont know if it need to have a boost reference carb. What is the right way to test if you have the right power valve?
I will take some A/f ratio # this week end see if i am ok I also validate with my A/F meter to ensure it is not getting too lean before it opens. Thats the best way to do it. |
Originally Posted by blue thunder
(Post 3709995)
If you have a boost/vacuum gage on the dash, note what vacuum you run a cruise speed the select a PV.5-1 in less in vacuum. I run 5-5-5in vacuum at cruise so I run a 4.5in pv.
I also validate with my A/F meter to ensure it is not getting too lean before it opens. Thats the best way to do it. If you wanna be safe, you can put a 8.5pv. Only way to really check is either have a vaccum gauge under carb, but on top of blower. This is where the PV gets its signal from. |
Originally Posted by gofast540NY
(Post 3709900)
I may be wrong but i thought boost reference only matters in a "blow through" application......
|
Originally Posted by MILD THUNDER
(Post 3710068)
That works ONLY if its boost referenced. The standard 525SC merc is not. Like griff said 6.5PV.
If you wanna be safe, you can put a 8.5pv. Only way to really check is either have a vaccum gauge under carb, but on top of blower. This is where the PV gets its signal from. What calculation +or- of the vaccum # ? Thanks. |
fixx
Originally Posted by supermx96
(Post 3710123)
I have the vaccum gauge that i can plug under the carb (on top of the blower) do you chek vaccum in drive at idle to determine the pv ?
What calculation +or- of the vaccum # ? Thanks. |
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