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Old 02-16-2005, 03:10 PM
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S-10 is alive again

Just thought I would let you all know that the S-10 is alive again. I breathed life into it today and got about 8 minutes run time in before coolant temp started getting a little high. Let it cool with the fans on a few times and inched up to about 15 minutes total time. I am letting it cool and will run it up to temp one more time before the first transfusion and some tuning.

I really thought with the new 2 core fabricated aluminum radiator heat would not be an issue at all, but it goes to show you how much of a roll air flow has. I have two fans, one 1000 and one 1400 cfm on the thing, and it still gets hot. Kindof dissappointing since my old $40 ebay radiator did as good as my new custom fabbed beauty.....but, oh well, it still looks good.

Chris

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Old 02-16-2005, 03:14 PM
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its that tall block fill you have in it... lol. j/k. just bustin your balls. that is one hell of a set up you have...
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Old 02-16-2005, 03:28 PM
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Awsome! Hope it runs great. As a recap, which cam did you decide on?
As far as the rad, I got a four core aluminum for 165, worth every penny.
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Old 02-16-2005, 03:32 PM
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Good deal Chris. Put a sound clip up if you can man. We want to hear it too. Keep an eye on that temp. Do you have a big pusher floor fan you can put in front of it to keep it cooled during break in? Man I love first fires. Makes me want to build another engine soon just to get that rush.
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Old 02-16-2005, 03:57 PM
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Sound clip hell! I wanna come ride in it. HG
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Old 02-16-2005, 06:52 PM
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Anyone is certainly welcome to come ride. Heck, if I make it up to the get together this summer you won't even have to go anywhere.

The radiator I got is rated to cool 700HP. The cores are each 1.25 inch each. EGT was running at almost 1300 so timing is still way slow in that area of the map. I never got to fine tune the timing, but I am sure that will help alot.

The first fires are good, but it makes me real nervous. I had some trouble getting it to crank since the fuel map and initial enrichments were set for the old cam and heads. It seems to want alot more fuel now for some reason. I can tell it is moving alot more air because it is pushing the BOV open when I rap on it with no load. It used to not do that. The engine is definately alot more peppy just reving with the new heads and cam.

The cam I went with is summit brand 230 duration, 480 lift, and 114 lsa. It is not 100% optimal and I would have like more lift, but I think it will make plenty of power. All the cams with the lift I wanted were either too heavy on exhaust duration or too tight on the lsa. It is so close to what a custom cam grinder recommended that I went ahead and sprang for the summit at less than half the cost.

Chris
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Old 02-17-2005, 09:47 PM
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Old 02-17-2005, 09:54 PM
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Doesn't copper dissipate heat better than aluminum?

Why not go with a good 4 core copper? It doesn't look as trick, but overheating isn't too trick either.
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Old 02-17-2005, 10:07 PM
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Do they make copper radiators??? If they do, how much $$$ ?????
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Old 02-17-2005, 10:23 PM
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i build copper air conditioning units where i work... copper is ALOT heavier lol... you can get them electro coated in.. black i know.. i have no idea about other colors... i tell u what... let me work another overtime saturday where no one is in there... im making me a tranny cooler DEFINATLY.. 40 bucks for one when i can cut the fins myself.. cut and expand the tubes myself.. braze the returns and connecters myself?? lol DONT think so... all done for free on company time baby .. already took a junkyard radiator in and leak tested it... fixed the leak.. and now its good as new lol

one other thing... nissan Z cars are BAD about overheating also.. the heat builds up in engine compartment with no where to go... something i have been thinking about doing is mounting 4" puller fans inside the engine compartment on the fender wells to suck out the hot air.. just a tought... one other guy i know did this to his z and it solved all his problems
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Old 02-17-2005, 10:48 PM
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Go Chris.
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Old 02-17-2005, 10:59 PM
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That is good to hear I'll keep my fingers crossed for you and that engine.
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Old 02-17-2005, 11:18 PM
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Way to go Chris, Its always great to hear the first few moments of a engine running. Its like on some old frankenstein movie, with the mad scientist screaming "ITS ALIVE, ITS ALIVE, ITS ALIVE!"
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Old 02-18-2005, 11:13 AM
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Chris,
That's good to hear. I bet it feels great. I love starting a fresh engine.

On the heating up issue, what is your initial timing like? I know you haven't fine tuned it yet but, with my blown engine was getting hot, during break in and the first few drives. Once I advanced my timing I never had another problem. It doesn't matter how many fans or how big the radiator (withhin reason) it will still get hot if the timing is retarded.

Royce

How do you post a sound clip? I have a few of my car but, could never figure out how to post them.
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Old 02-19-2005, 12:16 AM
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camaroman7d you just need some webpace to host them on.....I notice they allow zips for the image uploader so if they aren't huge you could also post them thru that....
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