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Last Indian

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Posts posted by Last Indian

    Have half inch lift cam vacuum at carburetor running 14to15 pounds of vacuum is this a problem I should address

    in Pontiac Performance Discussion/Questions

    Posted

    18 hours ago, Matador red said:

    Never thought that would help 

    There are many different types, but a good one, like this one from Summit will give you what you need. It has a check valve that allows for vacuum to be stored. So when you are pulling 14 or 15” of vacuum the canister stores that. So even if you need to apply your brakes in a low vacuum condition you still have 14 or 15” of vacuum to apply to the brakes. 14 to 15” of vacuum is more than enough to operate most all vacuum assisted parts. Brakes, air, etc.
    https://www.summitracing.com/parts/cvs-vpr700#overview

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    Have half inch lift cam vacuum at carburetor running 14to15 pounds of vacuum is this a problem I should address

    in Pontiac Performance Discussion/Questions

    Posted

    1 hour ago, Matador red said:

    Low vacuum should I add a electric boost 

    Most likely no! Give me the cam spec again. Lift intake & exhaust also duration! .500 lift is a healthy lift for a 400. What is the vacuum in gear?
    My 1969 Z28 which was almost 600 hp in gear at idle pulled 4” of vacuum & in neutral only about 14”! It got 6mpg & had a loopy idle most guys would kill for. It was what is known as a scavenger engine, wasted a lot of fuel because of how it pulls fresh fuel in & through the cylinder before the exhaust valve closes. This effect drastically reduces vacuum, but in a 12-1 compression engine it has impressive results. This is one of the reasons Z’s did not have power brakes or air!

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    Catalina 1969 with 428 Engine - Temperature Range

    in General Pontiac Discussion

    Posted

    6 hours ago, Fabio Parede said:

    Hello guys. Good news. I Changed the water pump pulley from 8" to 6" like you suggested and turn on the car. The car temperature now, stopped, it´s about 88 celsius 190 F. Ouside temperaure about 86 F. Temperature almost dont changed for about 15 min with the car parked. I think the problem were solved.

    Now I´ll change the blade for a GM 18" with clutch to improve more.

    I DON´T HAVE WORDS TO THANK YOU GUYS FOR THE HELP, INFORMATIONS AND PACIENCE.

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    That is good news Fabio! Glad to here it.

    • Like 3

    My Sunbird is entered in a calendar contest

    in The Pontiac Car Show

    Posted

    32 minutes ago, JUSTA6 said:

    :rofl: Disney thing with the Seagulls...   You know before the Chinese government bought controlling interest.  Think I'm 7-8th more than happy to stay right here and cruise over the finish line.  This really has been alot to ask of my friends and family.  Simply can't thank you all enough. :bowdown:

    Yeah,no! That was mine, mine, mine. #9,#9,#9 was a reference to the Beatles revolution #9! Where Lennon says that over & over.

    • Like 1

    code scan

    in Pontiac General Discussion/Questions

    Posted · Edited by Last Indian

    4 hours ago, Stef said:

    Hello,

    I have a technical question.

    Following a detection of a problem with the code scaner, can someone help me in the search for the defective part?
    The codes are:
    12 normal self-test
    32
    34
    For information, my car is Californian, it is equipped with the canister system.

    Thank you in advance.

     

    Long story short this relates to the MAP sensor, but it’s not that simple. It may not be a bad MAP sensor because this is just one of the reader sensors of the EGR system. This all deals with nitrogen oxide & combustion. It could be several things. The EGR valve, a vacuum line, gasket, etc. Don’t just go by a MAP               sensor, find the problem. Than fix that whatever it might be in the EGR system. The MAP sensor is just telling you that you don’t have the proper flow of exhaust gas into the combustion chambers to lower the temperatures to stop nitrogen from combining with the other combustion gas to form NO.

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    Catalina 1969 with 428 Engine - Temperature Range

    in General Pontiac Discussion

    Posted

    5 minutes ago, Fabio Parede said:

    Almost 2". Actually I use a 18" blade and I think 20" will not fit.

    Almost 20. But I think a 20" blade will not fit. A put a kind of paper At mine blade increasing 1" and 2". For more 1 (19" total) is ok. For 2" no.

    Ok, one step at a time. First change the pulley to the 6” & see what change that makes. If it is enough you could stop there, although if it were mine I would put the GM 18” fan blade with the clutch in as that type design does a better job of pulling air when needed, but decouples when not needed.
    If that change doesn’t prove to be enough than we can talk about what you might do next.

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    Catalina 1969 with 428 Engine - Temperature Range

    in General Pontiac Discussion

    Posted

    3 hours ago, Fabio Parede said:

    I have anothers doubts:

    My Shroud appears to be original. My fan appears to be from Mopar (Dodge Dart) 7 blades and 18 inches.

    My water pump pulley has 8" and the main pulley (from crankshaft) is about 6 1/2". Is That correct? Because with this configuration the water pump will rotate less than the motor. I´m correct?

    I have a A/C Non Original installed but not working. Only the hoses conected, no gas, no compressor belt, no electrical power to the vent inside the car. Those hoses get very hot when the engine works. Can I eliminate that hoses? I have no intention to put A/C to work (I think I will increase even more temperature)

    I did not tested the Thermostat, its a "normal" 180 F (not high flow)

    Any suggestions?

    Thank you guys

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    Fabio, the pulley should be the stock 6” not 8” that slower speed could easily cause a lack of cooling at lower speeds. The shroud & fan blades are wrong, as Kiwi indicated. There needs to be only about a 1/4 “ to 1/2 “ gap between the blade tips & the shroud edge. Also, the Mopar fan might work in Dodges setup, but it’s no good for yours. You need a straight blade fan to one with bent tips. See attached photo.  
    I don’t think you have blockage because it cools at higher speeds when you are move air through the radiator. I think, the fan issue, the shroud to fan issue & the  pulley size, are all combining to cause the problem.

    2 hours ago, 64 kiwi boni said:

    is it justA me , or does that fan look little in that shroud ? 

    Fabio, how much room is there from the end of the blades to the shroud ? that will cvertainly be loosing flow through the radiator at low speed.

    No it’s not you! 

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    FWD ground pounder - Last Indian

    in Pontiac Progression Place

    Posted

    The last 3 years have been insane! Between the Covid bullshit & family & friends stuff I JustA have not had time to scratch my behind, let alone anything else. But I’ve got a new idea for what I think might be a pretty cool add to the Indian. 
    That said I need to first finish a promised project for a mate. So stay tuned because I hope to start it this winter. Fingers crossed!

    • Like 3

    Catalina 1969 with 428 Engine - Temperature Range

    in General Pontiac Discussion

    Posted

    22 minutes ago, Fabio Parede said:

    My car is runnig up to 210 F when in trasit. Sometimes increases. On the road, up to 60 mph about 170-180 F. I have a brand new radiator, a new water pump (Like original 11 bolts and cast impeler), a thermostat for 180 F (but not for high volume), original pulley, shroud in place, fresh new coolant, 16 lbs radiator cap. I tested the temperature indicator and its ok.

    I have a Holley 0-80555C 650CFM Spread Bore Electric Choke Vacuum Secondaries

    I don´t know where to look first. I´ll appreciate any help

    A couple thoughts. First it may be the fan. You should run a 7 blade fan on a clutch thermostat housing that mounts to the water pump hub. By your description it sounds that the system cools properly when moving enough air through the radiator. The fan I described will make a huge improvement at low speeds & help to pull down temperature when temperatures rise above the set point of the thermostat clutch housing. Also how many rows is the radiator? A larger radiator, like a 4 row may help as well, but I would start with the fan & clutch housing.

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    Catalina 1969 with 428 Engine - Temperature Range

    in General Pontiac Discussion

    Posted

    54 minutes ago, Fabio Parede said:

    What is the correct range of temperature for a Catalina with 428 engine? I´m a little bit concearned about it and I didnt find this information. Thanks in advance

    I presume you are referring to coolant temperature? If so this temperature can normally run between 160 Fahrenheit & 220 Fahrenheit, but 220 on the high  end! I would not recommend running any extended period time at that temperature. A better choice of temperature range would be 160 to 190. There are a whole lot of variables that can apply depending on what kind of performance you’re looking for.

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