My new drag toy. 93 lx coupe carbed LS1/th400. (pics)
03-17-2009, 06:26 PM
#241
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It really does not have a stumble to it. Rather a lean spot and then quickly starts to richen up to 12.3 to 13.5:1 at wot. I need to get the laptop hooked up to it so I can log some runs and post them.
The car is very responsive and does not fall on it's face at all. It just goes....
The car is very responsive and does not fall on it's face at all. It just goes....
03-17-2009, 09:25 PM
#243
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35's? Are you reffering to the squirters? They are 31's. Per the box info. I doubt the guy changed those. It also say's pink cam.
Would I need to go up to 35 squirters you think? If they are in fact 31's.
03-18-2009, 08:19 AM
#244
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About teh crankcase, no, it shoudn't pull oil into your motor, if set up right. What you can do, is have a "baffle" welded to the bottom side of teh valley cover, to keep oil from splashing on/into the area where you would drill and have a AN fitting placed. Kind of like a Valve Cover baffle, but on teh valley cover. That way, it WILL keep oil out of teh line pulling vacuum. Good to go there.
Timing. 18-22 at idle, is ALOT. That maybe a source of lean right there. I am not REAL familiar with how much timing teh LS motors like/don't like, but most SBF's and SBC's I have messed with over teh years, I end up with 10-15* at idle (initial) With so much timing thrown at it, that maybe the source of lean at tip in. I would try and back timing off some, like down to 13-15* and try that. You should have ALL in by 3000 RPM's.
Check your timing at idle, then check it at 3000RPM, and that will tell you if your advance is working.
I just noticed I was looking at pics of another car with a dist is why I was thinking this one had one, whoops, my bad.
Timing. 18-22 at idle, is ALOT. That maybe a source of lean right there. I am not REAL familiar with how much timing teh LS motors like/don't like, but most SBF's and SBC's I have messed with over teh years, I end up with 10-15* at idle (initial) With so much timing thrown at it, that maybe the source of lean at tip in. I would try and back timing off some, like down to 13-15* and try that. You should have ALL in by 3000 RPM's.
Check your timing at idle, then check it at 3000RPM, and that will tell you if your advance is working.
I just noticed I was looking at pics of another car with a dist is why I was thinking this one had one, whoops, my bad.
Last edited by Gen414; 03-19-2009 at 08:36 AM.
03-18-2009, 06:00 PM
#245
one goes on top and one below on the screw.Timing. 18-22 at idle, is ALOT. That maybe a source of lean right there. I am not REAL familiar with how much timing teh LS motors like/don't like, but most SBF's and SBC's I have messed with over teh years, I end up with 10-15* at idle (initial) With so much timing thrown at it, that maybe the source of lean at tip in. I would try and back timing off some, like down to 13-15* and try that. You should have ALL in by 3000 RPM's.
Check your timing at idle, then check it at 3000RPM, and that will tell you if your advance is working. I did not see a source of vacuum on your dist, so you have mechanical advance. If your timing is not all in by 3000RPM, you may need to change your teh springs to a lighter set.
Check your timing at idle, then check it at 3000RPM, and that will tell you if your advance is working. I did not see a source of vacuum on your dist, so you have mechanical advance. If your timing is not all in by 3000RPM, you may need to change your teh springs to a lighter set.
03-19-2009, 08:11 AM
#246
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Most engines with cams bigger than stock will want 20 degrees of timing at idle, most racers on old school engines lock the timing out completely at 34-38 for instance. His timing, etc seems perfectly in line with his setup, he might need more total but that is for a dyno or track to decide that.
True, but, maybe I missed it, but I thought this was a 'stock" type of build with a carb
And yes, I locked my dist. out (on my SBF) with 34* as well. I did not run it on teh street like that, and it was always WOT
I never ran a locked out dist on teh street, so that would be something new to me. I would just think, on teh street, locked out that's alot of timing, and could cause a lean situation. I guess you could play with the carb to make it work.
On any of my street cars, I always ran 10-15* of initial, and with the LS series, that my understanding don't need alot of timing anyway to begin with, that much timing (18-22* or more) @ idle, still seems high to me.
Well, that is what the forums are for, throw some opinions out there. Let us know what ya do, and how it comes out
03-19-2009, 08:24 AM
#247
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True, but, maybe I missed it, but I thought this was a 'stock" type of build with a carb
On any of my street cars, I always ran 10-15* of initial, and with the LS series, that my understanding don't need alot of timing anyway to begin with, that much timing (18-22* or more) @ idle, still seems high to me.
Well, that is what the forums are for, throw some opinions out there. Let us know what ya do, and how it comes out
On any of my street cars, I always ran 10-15* of initial, and with the LS series, that my understanding don't need alot of timing anyway to begin with, that much timing (18-22* or more) @ idle, still seems high to me.
Well, that is what the forums are for, throw some opinions out there. Let us know what ya do, and how it comes out
The motor is no were near stock. 383 ci, 242/248 cam etc. But I will be driving this on the street some. Right now I'm trying to figure eveything out.
I was trying to hook the laptop up last night but could not get the cable driver installed correctly. I think I got it now. I'll try again today and let you know exactly what the timing is. We set a few things at safe levels to start with and will fine tune it as we go along.
03-19-2009, 08:33 AM
#248
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The motor is no were near stock. 383 ci, 242/248 cam etc. But I will be driving this on the street some. Right now I'm trying to figure eveything out.
I was trying to hook the laptop up last night but could not get the cable driver installed correctly. I think I got it now. I'll try again today and let you know exactly what the timing is. We set a few things at safe levels to start with and will fine tune it as we go along.
I was trying to hook the laptop up last night but could not get the cable driver installed correctly. I think I got it now. I'll try again today and let you know exactly what the timing is. We set a few things at safe levels to start with and will fine tune it as we go along.
Ahhhh, ok. Good luck
03-20-2009, 11:19 PM
#249
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I had no luck getting the laptop hooked up today. I'm about tired of this ****. It's always something. I'm gonna get another cable for the laptop, the one I got from Fry's takes an IT person to opperate. Or I'm just a dum ***!
03-29-2009, 02:59 PM
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I got a few things done lately. I lowered the car down on the rear tires. I also tried another set of wheels and tires from a buddie. The have 1" of more back spacing. They fit alot better but the tires are way to small it's a 235 DR vs my 27x10.5". The car looks better sitting lower.
03-30-2009, 08:14 AM
#253
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Car looks good. I personally would have put a bigger tire out back, ATLEAST a 275/60 but, that's just me. Car still looks good though.
You ever figure out that lean condition at tip in? I was thinking that it is probaly the PV if all your timing and everything is set. You ever step up in size? What size PV again did you have in it? Also, since teh PV works off of vacuum signal, do we know what/how much vacuum your motor is pulling...at idle, WOT?
You ever figure out that lean condition at tip in? I was thinking that it is probaly the PV if all your timing and everything is set. You ever step up in size? What size PV again did you have in it? Also, since teh PV works off of vacuum signal, do we know what/how much vacuum your motor is pulling...at idle, WOT?
03-31-2009, 12:48 AM
#254
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That little 235 DR was already on there. It was on my buddies car. I'm putting a 28x10.5x15S on it this weekend.
The carb is currently plug pv's and 82/87 jetting. It runs pretty good WOT but part throttle is still very rich. And loads up.
I'm switching back to my 6.5pv and 75/90 jetting. It was close just needed fine tuned from that range. The car drove fine like this.
Vacume is 10 to 11 inches at idle, in gear with foot on brakes.
The carb is currently plug pv's and 82/87 jetting. It runs pretty good WOT but part throttle is still very rich. And loads up.
I'm switching back to my 6.5pv and 75/90 jetting. It was close just needed fine tuned from that range. The car drove fine like this.
Vacume is 10 to 11 inches at idle, in gear with foot on brakes.
03-31-2009, 10:57 PM
#255
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I managed to spend a few hours tonight getting the carb switched back around. I picked up a 5.5 pv and jetted it to 75/87. I'm going to work it out from there. It should be close.
I got 3' of -8AN and a -8 45AN and made a new vent hose. I made it go up to the rear package tray and the down through the floor. I don't think it will splash gas.
I took the driver seat out to re-tap and seat mounting hole that was stripped.
I also picked up my slicks. I hope to mount them by this weekend.
I got 3' of -8AN and a -8 45AN and made a new vent hose. I made it go up to the rear package tray and the down through the floor. I don't think it will splash gas.
I took the driver seat out to re-tap and seat mounting hole that was stripped.
I also picked up my slicks. I hope to mount them by this weekend.
04-01-2009, 01:55 PM
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I might be able to drive it tonight to find out how it does. If not it will be this weekend. My wife has a minor surgery and my daughter fell at the sitters Monday and fractured her leg. We took her yesterday and got a cast put on it. So these two things are take top priority over everything right now.
I'm home with her the rest of the week and it really sucks for her. All she can do is sit or lay down for 3 weeks. And all she wants to do is get up and play. It breaks my heart.