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Chassis Dyno 05-13-09 - Turbo /6- Updated w/ track 5/17/09
https://slantsix.org/forum/viewtopic.php?t=35318		 Page 2 of 3
Author:  raPoM [ Wed May 20, 2009 12:12 pm ]
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Hey Im new here. I just had to sign up to say WOW! I can not believe you ran a 12.32 on a stock engine,with stock rods at 22 lbs. of boost! The slant is a mighty beast for sure. And you did it on street tires?!?!?! Holy CRAP! :twisted:

Is this a full out race car? Does it have an interior? If I could run my slant at 12-15 lbs and get into the 13's on my daily driver,then the 360 is going back on the shelf.My slant eats oil like nobodys buisness,and I was getting ready to go with a small block untill I saw this post. I never knew that the slant responded so well to boost.

What kind of trans do you run? What other mods have you done?
Author:  Shaker223 [ Wed May 20, 2009 8:24 pm ]
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Quote:
Hey Im new here. I just had to sign up to say WOW! I can not believe you ran a 12.32 on a stock engine,with stock rods at 22 lbs. of boost! The slant is a mighty beast for sure. And you did it on street tires?!?!?! Holy CRAP! :twisted:

Is this a full out race car? Does it have an interior? If I could run my slant at 12-15 lbs and get into the 13's on my daily driver,then the 360 is going back on the shelf.My slant eats oil like nobodys buisness,and I was getting ready to go with a small block untill I saw this post. I never knew that the slant responded so well to boost.

What kind of trans do you run? What other mods have you done?
raPom,

This is a street car. Full interior...etc. I drive it to the track and back...100 miles round trip. It weighs 3365# w/me and a full tank of gas. The engine is 80k miles stock with the exception of 340 valve springs, 4 barrel intake and 600 holley DP. I built a header for it as well. The trans is a 904 with an 80's low gear set and an a999 front half (5 clutch drum). It is intercooled with metanol injection.
Author:  raPoM [ Wed May 20, 2009 8:46 pm ]
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Damn that is a good deal Shaker! Have you ever calculated MPG's on your 100 mile trip?
Author:  Shaker223 [ Wed May 20, 2009 9:10 pm ]
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19ish
Author:  Kidd [ Fri May 22, 2009 7:04 am ]
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This really makes me think about boosting my race engine....would prolly have to change the cam....too much lift.But hey......makes me think!! That is a great # you are hitting!
Author:  moper [ Wed Jun 10, 2009 4:43 am ]
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I was reading this last night... I've been lurking here for a few days because I'm getting myself a /6 car to play with... Your saying it's a blow thru carb setup on a stock engine and very high (IMO) boost. Pressure (boost) is resistance to the air moving. You may be rich because you're pumping a bit of air thru a carb (which is resistance) and then thru stock ports and valves (which are also restrictive). You may find that you can get a better handle on the fuel curve with less boost and it will make more power plus carry it higher. I'd be very curious what it will make with the right curve and less boost.
Author:  Shaker223 [ Wed Jun 10, 2009 6:10 am ]
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I was fat on the jetting which was causing the over rich condition and the mis. I dropped 4 jet sizes on the secondaries and that cured the problem.
Author:  turbo66valiant [ Wed Jun 10, 2009 4:53 pm ]
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Is it Dyno time or Drag time?

Did someone mention less boost? Its against the rules to lower the boost levels. Besides the adjusting screw our wastegates only goes one way, tighter.

Keep us posted on the Swinger, Tom.
Later
Ryan
Author:  Shaker223 [ Thu Jun 11, 2009 6:56 am ]
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Quote:
Did someone mention less boost? Its against the rules to lower the boost levels. Besides the adjusting screw our wastegates only goes one way, tighter.
I have the same problem with my wastegate too!! Go Boost Go!!
Author:  raPoM [ Tue Jun 16, 2009 10:58 am ]
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Quote:
Quote:
Did someone mention less boost? Its against the rules to lower the boost levels. Besides the adjusting screw our wastegates only goes one way, tighter.
I have the same problem with my wastegate too!! Go Boost Go!!
Every turbo car I had,had the same problem! My SRT-4 had it so bad I had to put a bigger turbo on it! :twisted:
Author:  Shaker223 [ Tue Jun 16, 2009 11:43 am ]
Post subject: 
Quote:
Quote:
Quote:
Did someone mention less boost? Its against the rules to lower the boost levels. Besides the adjusting screw our wastegates only goes one way, tighter.
I have the same problem with my wastegate too!! Go Boost Go!!
Every turbo car I had,had the same problem! My SRT-4 had it so bad I had to put a bigger turbo on it! :twisted:
My caliber SRT4 is begging for a stage 1. I'm resisting so far.
Author:  raPoM [ Tue Jun 16, 2009 12:30 pm ]
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I had the Neon SRT, Ran a 13.68 Bone Stock(I hear its one of the fastest stock times.) Ran a traction limited 12.76 with the 50 trim on it.I also got a best of 36 m.p.g WITH the big turbo cruising from Southern Utah to Vegas(the track i used to run) Then back home at about 65-70 mph. I once raced all day,drag in the morning and auto-x in the afternoon and calculated mileage at about 16 m.p.g.

I dont know what kind of experience moper has with turbos,but I have a nephew running 28 lbs of boost on his acura RSX and he drives it to work every day(60 miles each way.Granted the engine is fully built and forged internals) he kisses 10's everytime he goes to the track.Not bad for only a 2.0L eh?
Author:  Shaker223 [ Tue Jun 16, 2009 1:50 pm ]
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Although it is race only, it is still a 2.2 that runs almost 150 in the qtr.

Just like 2.2s, slants respond very well to boost.


http://www.turbo-mopar.com/forums/showt ... 07&page=28
Author:  moper [ Fri Jun 19, 2009 9:57 am ]
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I have a bit of experience with it. From 2.2T1s and a little with the Turbo 2s, Nissan, methanol fueled on the Stovebolt, 1240cc and larger 4cyl motorcycles, and a bunch of Procharged mustangs and GMs. My point was that measured boost means little. Because it's RESISTANCE to air moving. You can read 150psi ahead of a gate valve, but full flowing on the other side you're only going to move as much as the largest restriction and pressure will allow. By removing restrictions, you dont have to have as much pressure. So MORE power comes from LESS boost. Blow thru carb setups are the hardest and worst to get dialed in unles you really know carbs, have a carb that can be adjusted 20 ways from Sunday, and have that car on the rollers to test corrections. They are also the least expensive and have been around since prior to WWI. Think of the single throtle body on a modern 4cyl turbo, and the dry flow intake system. The air moves easily and turns well, and the fuel doesnt enter the intake stream until the port opening of the head and does so in a very well distributed form. Then envision one with fuel spitting out the bottom of the boosters and four times the resistance plus the throttle body of the carb itself the air has to get forced around. That is why I dont do blow thru carbs any more.
Author:  Shaker223 [ Fri Jun 19, 2009 11:51 am ]
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Quote:
My point was that measured boost means little. Because it's RESISTANCE to air moving. You can read 150psi ahead of a gate valve, but full flowing on the other side you're only going to move as much as the largest restriction and pressure will allow. By removing restrictions, you dont have to have as much pressure. So MORE power comes from LESS boost.
Agreed, the whole slant 6 set up is very restrictive for a boosted application but responds well. I've often wondered how much boost the engine is actually seeing with a .380 lift cam (after lash) and the small intake port runners..

I'm currently porting one of the Aussie intakes to help remove one of the restrictions for my new engine. All I can say is "tedious" and alot of material has to come out.
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