80LS1T Posted April 4, 2003 Share Posted April 4, 2003 What is that hole in the bottom of my LT1 timing cover for. I have the 95+ timing cover. Its on the lower passanger side of the timing cover. Also which hoses go where on the water pump? There are like 5 places for hoses. 1 for upper radiator hose, 1 for lower, where do the other 3 of them go? And where does that vapor line from the rear of the heads go? ALLDATA doesn't have any diagrams of this! Thanks, Guy Quote Link to comment Share on other sites More sharing options...
Tim240z Posted April 4, 2003 Share Posted April 4, 2003 This is Tim, Mudge's Evil Twin!! Try this: http://www.theherd.com/articles/lt1_cool.html http://home.earthlink.net/~onealk/capricess/tech/lt1_cool.html http://www.h-body.org/people/projects/building_lt1/lt1%20info.html http://www.automotiverebuilder.com/ar/ar99928.htm Tim Quote Link to comment Share on other sites More sharing options...
80LS1T Posted April 4, 2003 Author Share Posted April 4, 2003 Ok I just found out what that hole in the timing cover was for. Its for the cranks sensor on 96+ models. Now about those hoses...I didn't get much from those pages Tim I did get the info on the timing cover from one of them though! Does anybody have a picture or diagram of where these hoses go? Thanks, Guy Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 4, 2003 Share Posted April 4, 2003 Ahh, 95 timing cover is its OWN timing cover, unfortunately unlike the Opti which is the same 95+. The only "bad" thing about the 96 cover is that you can't run a double roller chain with it. Opti hoses, male goes to TB ducting and female goes to T coming off the intake manifold vacuum. Quote Link to comment Share on other sites More sharing options...
Guest livewire23 Posted April 4, 2003 Share Posted April 4, 2003 since we're on the topic of calling out mudge... , what kinda cars run low 17s? And you know when the next wed. night drag at sears point is? My friend just decided to announce to me that he thinks my car should run low 17s, so I need to grab my car and run me out to the track. no point in being a bench racer right? ARRGH!!! 17s... How dare he? Minivans run 17s. In other news, a Z28 did a PHAT burnout in front of me on the street today. It was sweet. Then he tried to zip away, but I tagged along behind him... Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 4, 2003 Share Posted April 4, 2003 Some think these are 17 second cars, I dunno. Mike said that the car I bought ran a 15.8 at Sac, so I think the 240s are maybe in the 16s bone stock, 280 I dunno but probably close with the right driver. I have a video of a 17 second Z car though, I think 78MPH or something. http://www.hybridz.org/phpBB2/viewtopic.php?t=18650&postdays=0&postorder=asc&start=30 May 17th 5PM I guess. Quote Link to comment Share on other sites More sharing options...
80LS1T Posted April 4, 2003 Author Share Posted April 4, 2003 Ok but does anybody know which coolant hoses (and vapor line) go where from the LT1 water pump? Guy Quote Link to comment Share on other sites More sharing options...
Guest livewire23 Posted April 4, 2003 Share Posted April 4, 2003 I think he was talking about my prelude. And at the moment, I think my prelude is a bit faster than the Z, from seat of the pants feel. But they should be pretty close. sure dont feel like a 17 second car. I think my mom's RAV4 is a 17 second car. Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 4, 2003 Share Posted April 4, 2003 There is only one coolant hose on my pump, coming out of the top. What vapor lines? If you mean for the heads, that goes to the radiator from the cross-over tube, right under the cap. Quote Link to comment Share on other sites More sharing options...
80LS1T Posted April 4, 2003 Author Share Posted April 4, 2003 Yeah I mean that cross over tube from the heads. What about the other 3 lines from the pump? Also why doesnt teh 96 cover work with a double roller timing chain? What makes it different fromt the 95 cover? Guy Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 4, 2003 Share Posted April 4, 2003 Maybe with eliminating the CPS (if you dont have it) you can do it, but I believe there is not enough clearance so you will have to grind. Since I dont own an OBD II car though I dont know for sure. The other 3 tubes all go to the radiator, what radiator are you going to use if not stock? Quote Link to comment Share on other sites More sharing options...
80LS1T Posted April 4, 2003 Author Share Posted April 4, 2003 Well I must have the 96 Cover because I have that CPS hole in the bottom of the cover. When I turn the engine over by hand it doesnt grind? I dont think it will be a problem. I am using a aluminum Griffin 26" X 19". I know now that the one that is the highest on the TB goes to the upper radiator hose. Now which one goes to where for the heater? Also if that Vapor line goes to the radiator(small male connection below the cap) then where does the overflow hose for the radiator go? Thanks, Guy Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 4, 2003 Share Posted April 4, 2003 Connection for overflow is the very top (under the cap), the crossover tube connects just below that, so there are two small connectors on the stock radiator. Is that a Griffin for a Camaro? Or just one that fits in the Z better? The heater hose I believe is the bottom pass one. The upper one goes to a bleeder, which also has the TB coolant hose attached to it. I can check when I get home though, I touch that car so little I am forgetting things. Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 4, 2003 Share Posted April 4, 2003 Side pass to heater, top one for TB (which I have bypassed) and then to rad. http://66.228.67.107/skarodom/heads/ai/2003-hr-rebuild/KmemRemoval6.jpg As for the Xover and overflow, I may even have mine reversed, they are both the same size hose, I appologize for being braindead 8) I'm thinking that overflow should be the bottom one, and Xover "drainage" should be the top. Quote Link to comment Share on other sites More sharing options...
80LS1T Posted April 4, 2003 Author Share Posted April 4, 2003 Does it matter which side of the heater core I route the inlet hose to? I can't remember which hose is the inlet and outlet of the heater. Is it the left or the right for the inlet? Here's a picture of what I think the hose routing should be. The colors of the hoses mean nothing. Is this right? Oh and Mudge I am still confused about which vaccum line goes where on the optispark??? They both look like male connections on the optispark. Thanks, Guy Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 5, 2003 Share Posted April 5, 2003 On the opti itself the tubes just slip on, whichever looks right, go for it. The connection in the TB ducting, being just a hole, is awaiting a MALE. The one going to the intake is a female waiting to accept a male T fitting, this is above the PCV valve. I'll look at the water pump routing in an hour or so, on the stock heater box there are two different sized hoses, so inlet/outlet is impossible to screw up. Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 5, 2003 Share Posted April 5, 2003 Guy, water pump routing is really simple on the pass side. Top hose goes to the top hose on the rad, part of this is an aluminum tube (on the stock car), kind of like the oil cooler on the ZXT. Bottom hose goes to the bottom part of the heater box, I assume that the top one is feed and bottom is return, but I dont know that for sure. Should be very easy to find out, especially if your using an electric pump, just turn it on and see where water exits. Did the opti stuff make sense? There is a small rubber 1.5" or so extention on one of the Opti connections itself, which then has a male fitting. I have a spare opti laying around so I can scribble it if need be. Quote Link to comment Share on other sites More sharing options...
80LS1T Posted April 6, 2003 Author Share Posted April 6, 2003 I guess I should have told you that I am do not have that vaccum harness. Do I really need some special GM part for that or can I just use 2 vaccum lines? What exactly is in all of that vaccum harness? Thanks, Guy Quote Link to comment Share on other sites More sharing options...
Mudge Posted April 6, 2003 Share Posted April 6, 2003 Nah, just use anyhing, all it is there for is to run air through the thing to keep it dry, hopefully. So just pick something that fits, get some long vacuum line and that should work fine, figure on 5 feet total and cut it in half, but measure it yourself so you know how much you need for sure. You do have a connector for your opti right? I forget what year your donor stuff is, the 95 though needs a different connector than the early opti, unless you break part of the opti to hook it up. I can take a pic of this if needed, it is just a small extention that plugs into the harness, the 95 one just has a longer connector, by something like 3/4" Quote Link to comment Share on other sites More sharing options...
80LS1T Posted April 6, 2003 Author Share Posted April 6, 2003 Yeah I have that harness. My timing cover is a 96' and the Opti spark is 95+. Now about those vaccum lines from the optispark, there is a small male fitting coming off the optispark and then there is a slighty larger male fitting coming off of it. Now I would assume that the small one goes to the intake manifold and the larget one goes to the air intake tubing. Thanks, Guy Quote Link to comment Share on other sites More sharing options...
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