IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: gusszgs on March 05 2016, 06:35:13 PM
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Has anyone stepped up the new MT Radial Pro? I'm going to give the ET Streets a couple more tries this spring but if my traction wows continue I'll have to do something, and a tire change may be in order. My ET Streets are in very good shape but with this new Husek converter it's blowing them off pretty easy at low boost launch. Mind you the track conditions weren't the greatest late last year, and that's why I'll try them a few more times this spring.
Just wonder if anyone on here has them and what difference they made.
http://www.summitracing.com/int/parts/mtt-3754x/overview/ (http://www.summitracing.com/int/parts/mtt-3754x/overview/)
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No...but have read good things about them on the other board. My 28x9's just came in...at 10 percent off Summits price. I got in on a group order from Cory at Karbelt in Oshawa.
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Yes, but I have yet to test them at the track! They are way softer than the regular MT drag radials.
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I think with your new combo and the trans setup you need to be stepping to a 28 inch tall tire when you buy new ones. Those 255 are nice but I think the extra height gives more of a contact patch.
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28" tire will keep the RPM's in a more usable powerband. I'm curious what the slip rate is with Huseks convertor.
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Jim I have 28x9's and 10.5's mounted on stock GN rims. You're more than welcome to try them. Just let me know when you hit the track and I'll bring 'em.
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I'd try the 28x9 and see. I would run as much pressure as possible and still get a good launch. The sidewalls are wiggly and I never like the loose feel at the top end so keeping the pressure up minimizes this. If I thought I could fit em I'd try a 29" tall tire. That is one of the reasons I have been looking at stiffer rear springs.
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29's mite contact the tail pipes. Number 4 on the rear QA1's and 11 PSI in the 28's keeps it in the groove.
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Also less pressure allows more growth at speed so you add height at the big end, though I'm not sure how much. I always liked my m/t slicks.
Not as much fun as the g60-16 m&h but they always hooked. Just scary looking on the street I think. Harder to get a race even though I have em on stock t wheels.
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I think with your new combo and the trans setup you need to be stepping to a 28 inch tall tire when you buy new ones. Those 255 are nice but I think the extra height gives more of a contact patch.
I'm well aware of the 28" having the bigger footprint and RPM reduction on the big end......only reason I have the 255's is the steal of a deal I got on them. Brand new $300! They were at a tire shop for big rigs and I seen them sitting in the corner and thought, that's strange, MT ET Streets at a truck tire shop?? So I inquired about them. Anywho, turns out they ordered them for a guy who's a friend of one of the workers there, and he never came in to get them. Sold them to me on the spot.
Brad, I should had that slip info on the Husek 9.5 this spring! If I can get the PL sorted out. Should be a fun year.
I'm thinking if I do opt for the Radial Pro, they should go on a 8-8.5" rim right? Maybe I hunt around for some Vectors. I think they were 8.5 wide weren't they?
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MT will likely recommend an 8" wide rim. My Billet Specialties are 8"...and I have a pair of 28x9's on them. I also bought two more Billet Specialties and mounted 28" DR's on them for the street. I run 28x9's and 10.5's on the stock 7" rims to headfake 'em at the track occasionally.. .but I don't recommend it. Stick with the correct rim width for the tire. I picked up a pair of mint 255 DR's from Brandon and am mounting them on GN rims for the street with 235's up front. Yes, I know, I have too many rims and tires. :)
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I posted on the other board awhile back asking if anyone had slip numbers for Davids LU convertor. I pretty much got jumped on for asking the question. My understanding is Davids LU convertor is made for racing unlocked. Seat of the pants doesn't tell me anything. Some real world numbers would be helpful. :)
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Yeah there is always some "passionate discussion" when the comparisons are brought up regarding these new converters.
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Well, I know this doesn't help much but, the MPH wasn't too bad when I went in the fall, 12.11 @ 113 and 24 psi
1.95 60'..........that was on the 255 Micky's with about a 0 boost launch
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Damn, Brad! You want to involve science? Buicks don't need no stinkin' science, they run on magic and religion.
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Nothing wrong with the 255 size but you said it yourself, you aren't hooking any more. I think they are a great tire and are on my list of "one of these days" so i can go to the track. But I'm spinnin a stock turbo and only a few mods, you have clearly out grown them with a larger turbo, great new converter and alky to make wild power.
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Wild power? :O that's stretch'n things a tad :) I'm far from creating any new waves
Jury's still out on this converter, seems to work well but like Brad said, need some real world data to convince me.
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Power is in the heads...and the stockers are a cork.
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When you are DEEP in the twelves with elevens mph you are making power. Stock heads might be a cork but it doesn't take much to "massage" the bowls and see some flow. And bolting on proven aluminum heads with no work out does some of the worked heads. And it is a street car. With a sofa for a front seat. It is wild. And real nice looking from the pix I've seen.
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Check this idiot.12.3 at 117...leaving from an idle...20 PSI...Erics chip on the default settings...haz ing the DR's...and rolling coal all the way down the track. I wonder if this guy could go 6.7 at 105 in the 1/8th if he dialed the tune in a bit. :)
http://s1199.photobucket.com/user/armdropdragracing/media/ADR%20Videos/BradGN.mp4.html?sort=3&o=1 (http://s1199.photobucket.com/user/armdropdragracing/media/ADR%20Videos/BradGN.mp4.html?sort=3&o=1)
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How long ago was that?
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That was the .030 over engine with the old SMC alky kit...so I'll say 3 years ago. Remember...you can't go fast with an AC convertor...or can ya'. :)
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They were the one to have in their day.
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I had one and it was instant boost with the stock turbo. I just could not keep a trans functioning back then.
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I need more seat time its tough with only a half a dozen passes a year :013: if only we had a track I can go race 400 ft every other weekend but its a 2 hour drive each way......
And its frightening in the left lane against the wall!
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I'm in the exact same boat Larry 2 hrs to the track for me as well. I finally pony'd up for a car trailer, so I'll be getting a lot more seat time now.
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Nice. What did you drop your coin on? Pix? Remember car trailers are like chainsaws, never loan it out, it never comes back like it was.
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Bought a 16' open
Came with winch and battery
I'll send you some "no so good" pics. I can't post them here. File is too big.
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Looks like a nice one.
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Looks pretty long if you turn a bit to the right.
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Has anyone stepped up the new MT Radial Pro? I'm going to give the ET Streets a couple more tries this spring but if my traction wows continue I'll have to do something, and a tire change may be in order. My ET Streets are in very good shape but with this new Husek converter it's blowing them off pretty easy at low boost launch. Mind you the track conditions weren't the greatest late last year, and that's why I'll try them a few more times this spring.
Just wonder if anyone on here has them and what difference they made.
http://www.summitracing.com/int/parts/mtt-3754x/overview/ (http://www.summitracing.com/int/parts/mtt-3754x/overview/)
Gus I just wanted to add If you are talking about Cayuga on thanksgiving(Can) I could only muster a2.1 -60 FT. No track prep that day. Old bfg dr. 275 60.
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Yes! Oct 18 was the day......were you there that day reality? I don't think there were more than 4 cars there including myself. I honestly thought they weren't going to let us run.
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Yes I was there in the ratty looking GN. 4 cars, when I made my 2nd pass I had to wait at the end of the lanes. But thanksgiving was the 12th. I was not there on 18th.
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Was just going through my time slips......... .yep I was there on the 12th as well. Best 60' that day was a 2.05 :rolleyes; Regardless your correct, the prep was brutal. Gives me hope for this year though
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Hey, I thought I owned the ratty looking GN, you mean there's two? :)
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Hey, I thought I owned the ratty looking GN, you mean there's two? :)
Apparently there is.
Also charter member of original owners club.
The main problem I have is idiots won't leave it alone.
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Oo ova hera. And ratty. But it runs. Good yall are getting to the track.
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Just adds to the "sleeper" effect. And believe me, mines nutt'n to cream about