If your thinking of going turbo.....
#1075709
09/15/11 08:41 PM
09/15/11 08:41 PM
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Joined: Sep 2009
Posts: 928 NC
SLOW67
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super stock
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OP
super stock
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I retract all my previous statements about thinking twice about going turbo. I've got my car up and running now and most of the things that I read about blowthru setups being hard to tune and cast pistons exploding so far haven't been true(knock on wood). I don't have a wideband and I've set my timing by ear and, I'm on pumpgas, the rumors about a boosted motor haven't been true for me. With that being said I will have a wideband and properley set my timing before I go to the track and try to get some numbers, but so far on the street with 7lbs looking at the plugs and setting the fuel pressure is all I've done. I learned alot along the way I figured I would pass on to those building a turbo SB, but take my words with a grain of salt because I am not a professional.... *Stock magnum manifolds are by far the easiest route, I tried headers and have one on the drivers side but run a manifold on the pass. side. If I did it over I would have used them on both. *My ebay GT45 turbo was nice and so far with about 50miles on it has shown zero signs of trouble. The 1.05 hotside is alittle big for a stock 318 it spools late but comes in hard *Air-to-air intercoolers take up alot of space. If I do it over again it would be air to water or meth. injection. *Ebay wastegates and BOV don't seem to be that bad. Mine are chinese knockoffs and seem to function ok although only time will tell *I run a walbro 190 pump and a mallory 4309 regulator. Both are cheap and seem to be ok for my application. I also love that I can't hear the walbro as opposed to my old blue pump. *My cheapo stall converter was supposed to be a 2200-2800. It pulls at about 2400 but is way too tight for my car and gear. If I did it over I would try to get something in the 2800-3200 range maybe more. I'm going to a glide anyway because the 904 is already slipping and its rebuilt *Don't drill out your PCVR's until you get it on the car and see how it runs...although this has probably helped me from going lean and killing my motor already. *Stock ignition has been fine so far but I will be going to an MSD BTM when I can afford it Just some things I was thinking about and thought I would share. I'm new to boost so this has been a learning curve but it's always good to share real life experience
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Re: If your thinking of going turbo.....
[Re: SLOW67]
#1075712
09/15/11 11:10 PM
09/15/11 11:10 PM
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Joined: Sep 2009
Posts: 928 NC
SLOW67
OP
super stock
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OP
super stock
Joined: Sep 2009
Posts: 928
NC
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Re: If your thinking of going turbo.....
[Re: SLOW67]
#1075713
09/15/11 11:12 PM
09/15/11 11:12 PM
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Joined: Sep 2009
Posts: 928 NC
SLOW67
OP
super stock
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OP
super stock
Joined: Sep 2009
Posts: 928
NC
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Re: If your thinking of going turbo.....
[Re: SLOW67]
#1075718
09/16/11 11:11 AM
09/16/11 11:11 AM
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Joined: Jan 2003
Posts: 28,096 Irving, TX
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Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,096
Irving, TX
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I went through much of the same thing when building my first TT440 in 2001. Nobody knew anything about putting a carb under a turbo. It was either some sort of voodoo or or a money sucking folly. Most of the people on Moparts were knocking me down and saying I would fail horribly. A few guys stuck by my side and offered info they thought would help. As the build progressed more and more people came over to my side. Once it was running well I had the support of most Moparts regulars. I really needed that support because I never had much success with Holley carbs. It's sad to think that this setup made it into Mopar Muscle Magazine in January 2002. It's a far cry from the setup that made Popular Hot Rodding in 2009. Now, there are truckloads of info available on the net, both good and bad. If someone spends the time to do a little research building a blow through turbo isn't that bad. You still find naysayers but stick with it and you'll be fine. Now that I've played with EFI, I'm not interested in doing another blow through. Maybe your build will progress liks that through the years too. So far, it sounds like you've done a pretty good job.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: If your thinking of going turbo.....
[Re: blowndart]
#1075720
09/16/11 02:12 PM
09/16/11 02:12 PM
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Joined: Sep 2009
Posts: 928 NC
SLOW67
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super stock
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Quote:
The key to the blow through carbs success, is the carb hat you choose. I switched to EFI also and I'd never run a carb again either. Not because they don't work, but because EFI is so much better on a street car. O2 sensors and closed loop are a wonderful thing when gas is $3.50 +. Nice setup on the Valiant. I ran a Gt45 also, and it was a great turbo.
I planned to go EFI when I first started but after spending wayyy too much money on trial and error building I was lacking the cash lol. I really want to find another Duster or Dart sport to make nice body wise and use all the things I've learned building this car to make the next nicer and more drivable. I've use this whole car as an expierment to test my abitlites. This is the first car I mini tubbed, added subframes, and moved the springs in. Sounds like little things but It pushed my abilites and I grew on it. Now I know what to do and what not to. Using nothing but a sawzall, hammer, and a side grinder I don't think I did too bad lol
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Re: If your thinking of going turbo.....
[Re: mshred]
#1075728
09/29/11 12:32 AM
09/29/11 12:32 AM
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Joined: Sep 2009
Posts: 928 NC
SLOW67
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Quote:
hey man, would you mind sharing all the details of your build? as in what you have into it money wise and parts wise? I have been debating whether to throw spray or a turbo/blower on to my low compression 360 j/y motor
Parts wise, minus the headers,(use magnum manifolds, trust me), I've got about $800 in the hard parts. Almost everything in the build was from ebay lol so I saved alot of cash there. Some will tell you not to waste your time with ebay "junk" but all of my parts worked fine right out of the box. I can't say how long all of it will last but for the money you can just buy better stuff IF the ebay stuff fails IMO. I did have to upgrade my fuel system though and that added some to the final cost. I had a 3/8 line and an old single outlet fuel cell with a holley pump. I upgraded to a new cell, mallory 4309 reg.,a walbro 190lph pump, and a return line back to the tank. If you don't want to cut up your car, definitely go with meth. injection. A front mount intercooler takes up alot of room and all the piping and stuff adds weight. The $350 for a meth. system is better in the long run. The carb was easy to do...just a basic rebuild on a 650 holley. I did drill out my PCVR holes to 3/32 and it's alittle too much but has saved me from going lean. My 02 reads a steady .930-.950 milivolts until the secondaries open. I'm waiting on my jet kit to get here so I can up my secondaries to keep my full throttle from going lean. The cost and the installation cost all comes down to how well you can fabricate. I was somewhat out of my league on that part of it but learned alot and after messing up a few times I got it right. O yeah, definitely build a bracket to hold the turbo. My GT45 is heavy and would have probably already broke some of my questionable welds lol
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