GT42Mag

[codyn]

http://www.bullseyepower.com/home.asp

they are making some of the best s400 in the county right now . and they just came out with dmax Pedestals starting at $299. they have different race covers that will gains some good hp to.

 

[Ben46a]

I even think i recall pat saying he wasnt recommending going with the big garretts for some reason now..... I personally Will be using an S400 variant based on economics and reliability..

 

[MAXLLY]

IMO- they are both great chargers. I look at it like this.

IF you are a racer the 42 may be the best becuase it provides max HP/air at the racing RPM, stock. It is claimed said they are a little peaky and boost comes on hard, perfect for racing.

Driving on the street more than down the 1/4 or in front of the sled? then i would get something that comes on a little easier, sooner and is tractable. In other words you aren't going anywhere when the wheels start to spin so why have it? The guy who gets it to the pavement first wins, all things being equal.

My vote for serious street trim is the S400 and N2O, if that isn't enough... send it in to Bullseye and make it bigger or add multiple stages.

With a good tune either one of these chargers push enough air to break all your shit and get you arrested for excessive speed.

 

[RENODMAX]

I think for that kind of air and a daily driver, I'd be going for twins. Much better drivability and same amount of air.

Obviously not if you are confined to a single by competition rules or something.

bingo. what does best mean anyway? what are you going to use the truck for

 

[jpowel29]

I've been running a journal bearing GT42 with twin CP3s & nozzles on the street and on the track for a while now. The turbo is awesome at the track and is a balancing act on the street. Boost is not really linear, it starts to come on really strong after you get past 1/4 throttle. That can be a handful at times with 2wd & street tires. I have tried various fuel tunes to help keep the control smoke and keep the rods/pistons in it. Then factor in shift rpm & converter lock-up that won't bark the turbo at the end of the on ramp. Of course its easy to merge with traffic since you are up to about 80mph by then.

 

[Dan@PPE]

Yes about 45-55 psi with the 42mag (stock injectors, dual cp3's). Just remember high boost levels dont mean it flowing more air, It just means there is alot of restriction.

 

[2wd_Sled_Puller]

Yes about 45-55 psi with the 42mag (stock injectors, dual cp3's). Just remember high boost levels dont mean it flowing more air, It just means there is alot of restriction.

A men brother all boost is heat. Heat we dont need

 

[ChevyDieselLLY]

bingo. what does best mean anyway? what are you going to use the truck for

a little racing, a little pulling and DD just the entire weekend warrior deal. the main reason i was looking into the gt42 is becuase i know Ed has been doing well with it and he does all these things.

i dont really want to run N20, i know its will make you go fast and have big numbers but i would like for my engine to last as long as it can and i know N20 wont help that at all. i will also most likely be going with 60% over nozzles if that helps any. if there is some smoke oh well, i drive like an old man ask my wife or some of the guys i drive with so im not really worried about it goin all crazy just something i will have to get use to.


thanks for all the info keep it coming.

 

[codyn]

Yes about 45-55 psi with the 42mag (stock injectors, dual cp3's). Just remember high boost levels dont mean it flowing more air, It just means there is alot of restriction.

what are the dyno number on the 42 mag? i know the 42 i was running was making 722 at 42 psi boost down at suncoast on the dyno. take it on the street and it was making close to 70 psi boost. so was i making less or more power? yea it can mean more restriction but you take a reg 4202 gets about 55 and modified 42 running close to 70 and gettting more hp out of it. i think the stock intercooler would need to be replaced to fix the problems with restriction and blowing intercooler boots.

 

[McRat]

what are the dyno number on the 42 mag? i know the 42 i was running was making 722 at 42 psi boost down at suncoast on the dyno. take it on the street and it was making close to 70 psi boost. so was i making less or more power? yea it can mean more restriction but you take a reg 4202 gets about 55 and modified 42 running close to 70 and gettting more hp out of it. i think the stock intercooler would need to be replaced to fix the problems with restriction and blowing intercooler boots.

I dyno'd 798rwhp uncorrected on stock injectors on a "short pull" with the PPE GT42mag kit. Up from 754rwhp with the GT4202R.

 

[ChevyDieselLLY]

i think i can deal with 800hp at the wheel.

Pat how well did you like the GT42mag? is it worth getting or should i look else where.

 

[RENODMAX]

a little racing, a little pulling and DD just the entire weekend warrior deal. the main reason i was looking into the gt42 is becuase i know Ed has been doing well with it and he does all these things.

i dont really want to run N20, i know its will make you go fast and have big numbers but i would like for my engine to last as long as it can and i know N20 wont help that at all. i will also most likely be going with 60% over nozzles if that helps any. if there is some smoke oh well, i drive like an old man ask my wife or some of the guys i drive with so im not really worried about it goin all crazy just something i will have to get use to.


thanks for all the info keep it coming.

why are you going to have a 700+ rwhp truck built if you dont want to go crazy and you drive like a grandpa? maybe you should get a prius

 

[McRat]

I liked it. For a race charger it ran pretty good on the street, but real boost didn't kick in until 2500, so you need to tune the trans also for drivibility.

 

[codyn]

I dyno'd 798rwhp uncorrected on stock injectors on a "short pull" with the PPE GT42mag kit. Up from 754rwhp with the GT4202R.

44hp difference? seem the 42 mag should make way more power than a reg 42. from everything i have been hearing

 

[ChevyDieselLLY]

why are you going to have a 700+ rwhp truck built if you dont want to go crazy and you drive like a grandpa? maybe you should get a prius

i do want to go crazy with it, i just rather keep most of it for the track or pulls. dont get me wrong im sure i will end up getting pulled over a few times.

 

[McRat]

44hp difference? seem the 42 mag should make way more power than a reg 42. from everything i have been hearing

I have a feeling I could have turned up the GT42Mag quite a bit higher. It made about 45psi on the dyno IIRC. It was tuned for operation at 3000-4500, but with a fairly small duration.

I think you're going to see some huge numbers out of the GT42Mag trucks in the near future. Stay tuned. There are at least 4 trucks out there that haven't reported #'s yet.

BTW, what's the highest numbers you've ever heard of for a stock injector #2truck?

 

[codyn]

I have a feeling I could have turned up the GT42Mag quite a bit higher. It made about 45psi on the dyno IIRC. It was tuned for operation at 3000-4500, but with a fairly small duration.

I think you're going to see some huge numbers out of the GT42Mag trucks in the near future. Stay tuned. There are at least 4 trucks out there that haven't reported #'s yet.

BTW, what's the highest numbers you've ever heard of for a stock injector #2truck?

not doubting your numbers at all. is it a 3.0 charger? why didnt you try to get more out of it if you though you could?

i bet there some other options that would be just as good as the 42 mag and be a little cheeper.

 

[McRat]

not doubting your numbers at all. is it a 3.0 charger? why didnt you try to get more out of it if you though you could?

i bet there some other options that would be just as good as the 42 mag and be a little cheeper.

No, it's a 3.2 inducer but form-factor compatible with the GT42's.

How much power can you make at 4500? I made very close to 800.

There are lots of other chargers in this size range. But to the best of my knowledge, PPE is the only shop that actually can sell you a complete kit. The rest are do-it-yourself projects.

The trick is the RPM. The GT4202R gives up at about 4000, but the GT42mag keeps pulling.

 

[codyn]

No, it's a 3.2 inducer but form-factor compatible with the GT42's.

How much power can you make at 4500? I made very close to 800.

There are lots of other chargers in this size range. But to the best of my knowledge, PPE is the only shop that actually can sell you a complete kit. The rest are do-it-yourself projects.

The trick is the RPM. The GT4202R gives up at about 4000, but the GT42mag keeps pulling.

i dont know how much power you can make at 4500 i was just going off what you said. if you wanted you can buy the install kit and use your charger. and bulls eyes just came out with a ped. to so getting the rest or the parts is not that hard. rpm is the key but a 3.2 charger verse a 2.9 is not really compareable. take a hx60 which is a 3.1 and a 42 mag 3.2 compare they might be the same .

 

[eds04max]

In post 19 you said you didn't care about track times..................if thats the case......I say you might need to come down a bit in turbo size to make it work with your build and make it more streetable. Pat cleared it up a bit when he said that the 42mag likes the higher rpm as compared to the 42. Do you really think that you will try to turn 4500 rpm?????? I think that is a not-so-good idea?? But that is opinion.
Also, no sled track will let you pull with a 3.2 charger in any class except modified................and trust me here.........you don't want to pull with them boy's!!!!!!
Get you a good 2.8 (or a 3" with a bushing)...........and you'll be good-to-go!!