What's a ballpark timing point to start at running somewhere around 11-12#'s???
Also, with the spout out will a BTM do anything???
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What's a ballpark timing point to start at running somewhere around 11-12#'s???
Also, with the spout out will a BTM do anything???
Sean, I had no probs @ 24 locked with 10 psi last year and i think chuck did the same. And that was with more compression than you have. But with any new combo I start low and work my way up. The BTM is supposed to pull timing even thought the spout is pulled. Did you read the post on corral about this? The deal with the air compressor test and the btm while the car is running? When is the fire up date? :D ;)
24?? Glad I asked I was thinking 28, lol.
I've got a tweecer but no time at this point to jack with timing curves and the like.
If all goes well & I didn't "F" anything up to major then it should fire Sunday pm, I've got a buddy coming by to help me put the trans in and get it buttoned up.
I missed that post on the Corral.
It depends on what kind of fuel you will be running.
I used 114 mixed with 94 and I got up to 24* total without any probs but my clutch let go when I set it to 26. I wouldnt go more than 26* I would just add more boost ;)
Best we can get here is 93 outta the pump, I'll probably run ~5-6 gals total volume with a 50/50 mix of 93 and 110.
I can always pull timing via the BTM:D
Most guys with a BTM run in the 28-29* range and set the BTM to pull it back to around 19-20* @ full boost. You can only do this if you are using an MSD or Crane HI-6 box with timing retard abilities using the spout out method.....you can't do this and try to pull timing with your Tweecer as the EEC timing section is rendered useless when the spout is removed.Quote:
Originally Posted by 5150 LX
This may be a stupid question but how do you measure/set total timing. I understand how to set the base (spout out) timing and I understand how the BTM pulls timing proportional to boost but can someone fill me in on the rest please??????
You pull the spout and twist the dizzy till it's @ 20-24 and leave the spout out all the time. BTM guys set the total to 28 sometime 30 and then pull the timing with the BTM as boost increases back to 20-22 or so. Pulling the spout makes for a very consistent drag car and helped my car idle a little bit better.
Sean, I ran 24 total all year last year and never moved it one time. When I put the ol 8" crank on I left it alone just to see what it would do and never had any knock on 94 octane. ALTHOUGH---3 days before I tore it down I flogged it at the track all day and put in some torco 112 just for giggles and the car sped up about .3-.5mph consistently.... :confused: beats me...
Hawk, I run the Digital 6 with the standalone BTM piggybacked to it. I do have a Tweecer R/T but will not have the time to mess with all that tuning before next weekend. I'm just looking to get it fired up and running well enough to get me down the track an 1/8 mile at a time :D Idle quality is not a major issue at this point, I'm just looking at WOT. Gonna probably borrow a trailer for this event.Quote:
Originally Posted by TheHawk05
WOW! A lot of reading but I found my answer to the same question
http://www.corral.net/forums/showthr...g&pagenumber=1
Good info in that thread...Thanks JR!!
After all that reading I have been outside working with my timing. I took out the spout and advanced to 20 degrees and I can't get the idle to come down past 1100-1200 rpms. I have tried adjusting the throttle screw as well as the air intake screw on the TB. Oh well... It does feel stronger though. I also have my BTM knob set on 2.5-3 and it seems to be pulling out the detination, but I need to go ahead and calibrated my BTM, so I'm going out to do that now. If I can not get the rpms to fall back to 850 I will just use this set up at the track. I had initial timing at 10 with the spout in and never saw more than 5 psi @ WOT. I took a hard run with the new set up and saw 8 psi for the 1st time with a 3.33 pulley!
Sean, 302man over on the corral is a good friend of mine. Send him a pm and he will explain all that you want to know about spout out timing.
Brandon
Brandon, I read the post above where he replied and gained quite a bit of useful info.
Thanks!!
Thanks Brandon I just sent him and email and we are trying to figure it out my idle problem. :)
I think I was involved in that world famous corral thread.:)
Did you try the mod?
I've been playing with and using spout out timing for years. I love it. Running 24* right now.
Once I trust my BTM I will go to 30* and pull timing with the BTM.
It's the safest way to run a stock computer car period.
I like the punch it gives at 20, maybe go for more later. I just need to get this frigg'n idle down past 1200! With an off-road pipe its noticebly loud at night! :)
JR, timing is a major key in idle. Try 24* just to see if it idles down and i bet it does.
Cool! I will go out now and try it. :)
You may have to reset your idle speed and unhook the battery and clear the EEC as well...
Well I gave it hell, but too many snags along the way.....No fire this w/e boys.Quote:
Originally Posted by 5150 LX
I've gotta fix a fuel leak at the rail, upper intake needs to come back off :mad:
The bolts supplied with my convertor are not working, gonna have to pick up some shorter ones & retap one hole on the convertor, hopefully it's not toast or else I'll have to drill that hole out & re-tap for a slightly larger bolt.
That damn trans about killed us trying to lift it in, I like stabbing a 5-spd much better, will be sore as hell in the am.
Maybe next weekend.
Yup. If I have to put the motor and tranny in they always go in together unless there's a major issue. That sucks about the converter and the intake. keep at it. ;) I ordered all my parts i need so I shouldn't be too far off.Quote:
Originally Posted by 5150 LX
This sounds interesting. I'll try it out this weekend. Just a little off topic, is this how the old school guys back in the carb days used to run them? ya know, with just one setting because of no ECU.
well the old school carb guys would do this if they didn't have the right advance curve. They just pull the vacuum line off and set it where ever thay want.
OMFG!!! Big difference in power! And it is HOT outside, like 90-95. Car runs so much better and quicker. For some reason, my FMU has much quicker response now. I wish I'd have tryed it last winter when it was still cool out. Anyways, I set it to 21* total timing. With 6 psi and 91 octane gas, you guys think I could get away with a little more, like 22 or 23?
And OMG the exhaust sounds so sweet now under WOT. Best free mod ever! :D
congrats on the most under-rated mod ever! Torques'R'us LOL
Id say yes you can get away with more but if it dosen't 'feel' faster or if you have any knock at all take it back where it was.
Ok, sounds good. Thanks, BQuote:
Originally Posted by regattacoupe
I wish I had actually tried it before I pulled it all apart, my car launched crazy enough with the 4.10's I used to have, would have loved to see what it would have been like with more torque :D
Not sure if I like it anymore. Idle wont hold steady. I'll probably go back to spout in.
hmmm... I had just the opposite effect.
keep us posted guys...I am gonna go back to the dyno next week with a smaller pulley and tune spout in....THEN spout out at 28 deg and pull with the BTM..if I can get a similar curve with the spout out, it'll stay out. I will of course record the spout in settings, just incase I experience the above mentioned idle problems with the spout out.