jt1
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Everything posted by jt1
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JTR kit SBC and WCT5 mockup in chassis. pics w/questions
jt1 replied to bjhines's topic in Gen I & II Chevy V8 Tech Board
Good to see you making progress John! I'm not by the way, but anyway... The 1/4" from the damper to the rack is about right. If you use a HEI, it will be pretty close to the firewall, about 1/2", so that's about where it needs to be. With a smaller dist you could move the motor back a little more, maybe 3/4" if desired. The JTR trans crossmember is offset because the motor is also offset to the right 1". To eliminate vibration the pinion shaft and crank/trans shaft need to be parallel, so you need the offset. Pete's laser pointer idea is the best way I've seen to check this. Looking Good!!!! jt -
Trial Fit 18 x 9.5 Wheels...With Pic's!
jt1 replied to Bartman's topic in Brakes, Wheels, Suspension and Chassis
Those are nice!!!! How much do they weigh? Are they cast one piece? John -
Windtunnel Article is Done...
jt1 replied to Mikelly's topic in Windtunnel Test Results and Analysis
It's going to be pretty cool to see this in print in Nissan Sport. HZ kicks ass!!!!! Mike, thanks for doing the write up, I bet that was a pretty good sized project. Some days I have problems writing a coherent sentence, let alone a whole paragraph. Are we going to get a sneak peak here? John -
Understanding the numbers on the data sheets
jt1 replied to Carl Beck's topic in Windtunnel Test Results and Analysis
Those are excellent ideas!!!!! I've been trying to come up with something similar to the nascar bucket style weight jackers, and that will work like a charm. John -
Understanding the numbers on the data sheets
jt1 replied to Carl Beck's topic in Windtunnel Test Results and Analysis
My memory of the wheel pads is that the center of the pad is flush with the floor, with a "ramp" on each end that is about 1.5" high. We used the blocks to roll the car over the ramp, then down. Part of our original plan was to let the air out of the tires to check lower ride height, but as the sidewall bulged out the tire would bear on the floor around the scale pad and affect the results, so Bob nixed that right off the bat. Checking ride height is gonna be expensive, because if we use a coilover car you have to unstrap the car, roll it off the floor, jack it up, take off the tires, make adjustments, put it back on the pads, ......., etc. All that eats up a lot of tunnel time, but I bet the results would be worthwhile. John -
All the accusumps I've seen used air, but that's been several years ago. Nitrogen would keep the moisture down for sure, if you had a source to fill it and adjust pressure. Probably some welding stores could supply it, or race teams that use N in their tires. John
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You can fill the accusump with oil before you install it, and put the air in right before startup to prelube. No problem. jt
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AZC rear control arms...watch for cracks
jt1 replied to viperredls1z's topic in Brakes, Wheels, Suspension and Chassis
I agree with DemonZ, the weld penetration looks suspect. Viper, can you post a straight on close up of the end of the tube where the weld was? John -
Building a scale windtunnel
jt1 replied to rudypoochris's topic in Windtunnel Test Results and Analysis
You fellows still in school need to ask all the professors and grads about what kind of projects are going on, you might be surprised. Just be polite and ask everyone who will listen to you. Some of them might need some free help and you can get in on some interesting stuff. John -
What are you using for spam killer? I've been sold out this week. Normally I'll have 20 or so spams, which I dealt with by simply deleting them. This week I've increased by about a hundred a day. This morning I had 868 in my inbox, and about ten of them were legitimate. I've used the filters in OE to reduce them to about half, but that's still over 400 to weed thru. I need some help!!! John
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Header design in Grassroots Motorsports article....
jt1 replied to phantaz's topic in Gen I & II Chevy V8 Tech Board
180 headers are just like other headers, the tube length has to be right for them to be optimum. It's hard to say without dyno results, but I bet 40-50 hp is a little optimistic. I wonder if he can get the pass side valve cover off? That is a ton of work and some nice fab work. Is he a member here? John -
The Z with Porsche center locks
jt1 replied to chelle's topic in Brakes, Wheels, Suspension and Chassis
chelle, what you're thinking about is a worthwhile goal. A setup for reds and matching rotors would be great for a Z. But, the carbon or ceramic rotors are serious $$$$, so it would be better to start with iron rotors. The 930 and the GT3 both use iron rotors. Also, you've got to work in a wheel and tire package to use the big brakes, or there's no point to the whole deal. John -
The Z with Porsche center locks
jt1 replied to chelle's topic in Brakes, Wheels, Suspension and Chassis
Interesting idea, but have you priced any Porsche carbon rotors lately? jt -
My suggestion is find where your employer is and choose based on the commute. Traffic can be a real bitch around Charlotte sometimes. However, taxes in SC are significantly less than NC, so give that some thought. Income tax, property tax, and gas tax are 20-30% less in SC. Also, SC smog laws are MUCH friendlier to hot rods than most of NC. It varies because some laws are county to county, not statewide. Alcohol sales are "local option", which means they vary accoding to the area. Both states seem about equal in terms of fat ugly bitches. John
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Understanding the numbers on the data sheets
jt1 replied to Carl Beck's topic in Windtunnel Test Results and Analysis
What opens a .rar file? I know, I'm clueless. John -
Ledfoot, that just made my day!!!!!!!!!!!! John
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It's certainly a damn shame he moved back to California. The natives of NC mourn our loss, a sparkling opportunity to be exposed to a great intellectual who handles the Queen's english with aplomb. His bad neighbors, certainly part of the great unwashed, will languish in the throes of their southern drawl, hoping that Gray Davis and the Governator will send someone to save them. Our average rainfall is about 48"/yr, and it happens pretty much year around. It seems that a man of such great intelligence.... I mean, he's a Doctor, for God's sake...... would be capable of checking the weather. Historical averages are available from the National Weather Service, and even online at theweatherchannel.com. Davy, come on and check NC out. Most of the locals are pretty friendly, and welcome people who are an asset to the community. John******* *******Definitely the bad neighbor type, with drawl.....
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Sounds good. I'll line up some strippers. I'll do a background check for lacrosse experience. John
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Understanding the numbers on the data sheets
jt1 replied to Carl Beck's topic in Windtunnel Test Results and Analysis
No. When the tunnel comes up to speed and stabilizes, one set of data is recorded, which is Pt1, then after a few more seconds a second set is recorded and becomes Pt2. Then these are averaged to produce the "avg" line. I recall Bob saying something about Q(psf), but I don't recall what is was. Tom probably knows. jt -
That would freak me out. Where does all that metal come from? jt
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More problems....oil pressure, or lack thereof
jt1 replied to lbhsbZ's topic in Gen I & II Chevy V8 Tech Board
Well crap. I really hate you hurt the bearings, but at least you didn't try a big burnout and scatter it all over the road. Try and look at the bright side. Remote oil filter/cooler/plumbing can be a problem. I've had a few, uh, learning experiences myself. One laying in the mud for hours trying to figure out if oil in the filter flows inside/out or outside/in. I'm glad you found the problem, and that damage was relatively minor. Check the cam (and everything else) carefully, running without oil probably didn't help it. John -
The sound country is very unique, and stunningly beautiful. It's a cool place to visit. The sounds are so wide and shallow that a constant wind will blow the water across, which is probably why you got flooded. We got blocked off one time and had to prolong a trip a couple of days. I didn't mind. John
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More problems....oil pressure, or lack thereof
jt1 replied to lbhsbZ's topic in Gen I & II Chevy V8 Tech Board
That's the plug that forces the oil to the oil filter. It needs to be there. Check the oil filter, the pump driveshaft, the dist gear & tang, and the pump pickup. John -
I guess it's theoretically possible Mike will get his car to the track one day. ........nah........ jt