maxrevs85
Well-known member
Howdy nieghbors...west mich huh....and where in west mich might that be ? That is if you dont mind.....
Performance chip question
- Thread starter LT4John
- Start date
maxrevs85
Well-known member
Your right and Vettes dont float very well . thanks for the PM>
Well they do .........but..........ya have to turn em' shiny side down..........and attach the evinrude to the rear bumper cover............bolts in pretty well if you have the runflats w/o a spare............:Silly :Silly :Silly :Silly :Sillymaxrevs85 said:
twiget
Well-known member
lt4 gs said:
I dont even want to think about how you would know such a horrible thing!!!!
Jason
V
vettepilot
Guest
Just jumping in here to add my two cents worth on engine temps, and Water Wetter... for what it's going to be worth...lol
The LT4 and LT1 engines need higher temps than the previous generation small blocks because the higher temps help the pistons and rings expand to provide a better seal to the cylinder walls during the compression and power strokes. So the temperatures that are in the 190 - 200 range are necessary for full efficiency. Yes it does help to lower the emmissions some, but when the engine runs efficient, emmissions are usually reduced as a by product. But, not always, some products are increased when combustion temps are increased, so the manufacturers are trying to strike a half-way point between providing the performance we want, and still meet EPA standards that the government demands.
Water Wetter - The coolant that we find in cars today have some of the best formulas to be had. One of the components of the coolant is a surficient (SP?) that is similar to the action of a detergent. It breaks up the surface tension of plain water so it makes a better contact with whatever surface it happens to be on or flowing against. This is the basis for Water Wetter, it just adds more surfacients to the coolant mixture. One can do the same thing by increasing the coolant mix to a 60 to 70% mixture from the factory fill of 50%. It's less expensive, and it does several other things too... it raises the boiling point of the mixture, it lowers the freezing point of the mixture, it adds increased water pump lubricants, and it increases the concentration of the corrosion inhibitors.
Of course like anything else that can be overdone, the same goes for coolant mixture. Too concentrated a mix relative to the water, and the freezing point begins to rise rapidly, and the capacity for heat exchange is reduced.
Just thought I would add this because for the prices I have seen for Water Wetter and related additives, one can purchase enough Anti-freeze to take care of two cars or more.
But you can of course do whatever you wish, I just wanted to throw this in for info sake.
vettepilot
The LT4 and LT1 engines need higher temps than the previous generation small blocks because the higher temps help the pistons and rings expand to provide a better seal to the cylinder walls during the compression and power strokes. So the temperatures that are in the 190 - 200 range are necessary for full efficiency. Yes it does help to lower the emmissions some, but when the engine runs efficient, emmissions are usually reduced as a by product. But, not always, some products are increased when combustion temps are increased, so the manufacturers are trying to strike a half-way point between providing the performance we want, and still meet EPA standards that the government demands.
Water Wetter - The coolant that we find in cars today have some of the best formulas to be had. One of the components of the coolant is a surficient (SP?) that is similar to the action of a detergent. It breaks up the surface tension of plain water so it makes a better contact with whatever surface it happens to be on or flowing against. This is the basis for Water Wetter, it just adds more surfacients to the coolant mixture. One can do the same thing by increasing the coolant mix to a 60 to 70% mixture from the factory fill of 50%. It's less expensive, and it does several other things too... it raises the boiling point of the mixture, it lowers the freezing point of the mixture, it adds increased water pump lubricants, and it increases the concentration of the corrosion inhibitors.
Of course like anything else that can be overdone, the same goes for coolant mixture. Too concentrated a mix relative to the water, and the freezing point begins to rise rapidly, and the capacity for heat exchange is reduced.
Just thought I would add this because for the prices I have seen for Water Wetter and related additives, one can purchase enough Anti-freeze to take care of two cars or more.
But you can of course do whatever you wish, I just wanted to throw this in for info sake.
vettepilot
WhalePirot
Well-known member
Over this winter I'm going to add an electric water pump
This is interesting. I've not seen an electric water pump that is designed for the street. The ones Summit carries are for drag racing ONLY, but I didn't hear it from them.
This is interesting. I've not seen an electric water pump that is designed for the street. The ones Summit carries are for drag racing ONLY, but I didn't hear it from them.
- Thread starter
- #28
LT4John
Well-known member
Thanks for everyone's help. I am running a 180 thermostat and I think I will leave it that way though the winter.
S
Shriker
Guest
With our cars the first thing to do with regard to cooling efficiency is check the radiator and evaporator in front of it for debris. If you have not checked in a while get prepared.....when I bought my car it looked like birds had been nesting in there! There was enough straw etc. to block about 1/3 of the evaporator. When I looked between the two , through the hole on the passenger side of the shroud, the radiator also had about 1/3+ of it blocked by the same type of debris: feathers, straw, paper scraps etc.
Just by cleaning this stuff out my car has been running cooler. Generally 195 in most driving situations, but going up to 220+ in traffic or stopped for a while on HOT days.
As mentioned earlier, these engines do like cooler temps but also as mentioned , need a certain temp to be effecient. Remember they have reverse cooling with the heads cooled first and the block second.
With regard to thermostats, I believe 180 is stock and many go to a 160. All this does is open sooner , it does not prevent the car from gettin hotter in some driving situations. Turning the fans on earlier is the best way to keep the car from getting up in the 220+ range , which is pretty warm. Programming them to come on at 205 or something does keep the car in its zone ......
Hope that helps.......
Just by cleaning this stuff out my car has been running cooler. Generally 195 in most driving situations, but going up to 220+ in traffic or stopped for a while on HOT days.
As mentioned earlier, these engines do like cooler temps but also as mentioned , need a certain temp to be effecient. Remember they have reverse cooling with the heads cooled first and the block second.
With regard to thermostats, I believe 180 is stock and many go to a 160. All this does is open sooner , it does not prevent the car from gettin hotter in some driving situations. Turning the fans on earlier is the best way to keep the car from getting up in the 220+ range , which is pretty warm. Programming them to come on at 205 or something does keep the car in its zone ......
Hope that helps.......
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