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is 20g to much for stock internals?

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rph74

15+ Year Contributor
30
0
Jan 6, 2004
Springfield, Missouri
Stock internals should be fine-assuming everything is tuned right. I ran too lean on my 187k motor and seized my oil rings on all 4 pistons. Luckily no other damage was done.
 
well i dont have the turbo yet cause im still contiplating on getting it but when i do get prolly the most im goin to boost is 20psi maybe a lil lower depending on how the motor takes it but thats when racing prolly like 10 psi daily or whatever feels pretty decent
 
That's true, it's really not anymore.......for the price you pay for a 20G, shell out another 50$ for a PTE 50 trim. It's bigger, and has way more potential than the 20G.

But to answer the question, it depends on the condtion of the motor. I've seen people run 24 psi on stock internals.....
 
20G is an excellent turbo. unfortunately it can't really be had new for a fair price considering the competition anymore, as previously said, more for the money is a PTE 50 trim. 20G is still a great street/strip turbo though, so whatever is your preference, it's only a few lb/min less than a 50 trim.

as for safe for a stock block, sure, stock block can take 500hp if you know how to tune. :thumb:

if you decide to run high boost i'd suggest ARP hardware, as the head w/stock hardware (correct me if i'm wrong on this someone) is known to start lifting at around 26 PSI or so in some cases

i've seen 500+whp driven reliably in many instances, both 1G and 2G on stock internals. it's all in the tuning and driving habits. and a little bit of luck of course..
 
Originally posted by 1fast97gsx
how much boost were you running?

I was running 18psi, tuning it for pump gas. The problem I had when tuning was that I kept on getting a "pop" backfiring sound when initially accelerating at WOT. It happened no matter how rich, or how lean I got. I should have known not to press my luck that day, but after about 18-20 3rd gear pulls I finally hurt the motor. Lesson learned.
 
Originally posted by 1fast97gsx
how much boost were you running?

I was running 18psi, tuning it for pump gas. The problem I had when tuning was that I kept on getting a "pop" backfiring sound when initially accelerating at WOT. It happened no matter how rich, or how lean I got. I should have known not to press my luck that day, but after about 18-20 3rd gear pulls I finally hurt the motor. Lesson learned.
 
thanks guys for the info and yea i know i can get a 50 trim and save more money and get more bang for the buck but i dont really care to be like a crazy strip car i just want to turn some heads as i beat them hehe and be able to get some good power numbers out of my car and if possible run some pretty good times, but i just wanted to make sure that goin with a 20g wont really kill off my engine and on point my engine only has 81,000 miles on it! thanks for the info again
 
Originally posted by turbowonder
thanks guys for the info and yea i know i can get a 50 trim and save more money and get more bang for the buck but i dont really care to be like a crazy strip car i just want to turn some heads as i beat them hehe and be able to get some good power numbers out of my car and if possible run some pretty good times, but i just wanted to make sure that goin with a 20g wont really kill off my engine and on point my engine only has 81,000 miles on it! thanks for the info again

Dude, that makes ZERO sense. But hey, it's your money....
 
Originally posted by turbowonder
thanks guys for the info and yea i know i can get a 50 trim and save more money and get more bang for the buck but i dont really care to be like a crazy strip car i just want to turn some heads as i beat them hehe and be able to get some good power numbers out of my car and if possible run some pretty good times, but i just wanted to make sure that goin with a 20g wont really kill off my engine and on point my engine only has 81,000 miles on it! thanks for the info again

so you don't want a few more horsepower for a cheaper price :confused:
 
naw gettin those extra horse power numbers dont matter that much to me i mean i know what a 50 trim can do my friend has one on his gsx plus i wanna stay with a mitsu turbo so it may not make sense but thats just me all i wanted to know from this thread was the opinion of how efficient would my car be after puttin a 20g on it with stock eternals and yes i know nothin is certain its all about tuning and how u drive! and i pretty much got most of the answers i was hoping for!!
 
Originally posted by GSntncT
That's true, it's really not anymore.......for the price you pay for a 20G, shell out another 50$ for a PTE 50 trim. It's bigger, and has way more potential than the 20G.

But to answer the question, it depends on the condtion of the motor. I've seen people run 24 psi on stock internals.....

So uh when did a PTE 50 trim run a high ten? Seems to me nobody has beat Shepards 20G et of 10.7 with a PTE turbo.

50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
 
Originally posted by NDgsx
So uh when did a PTE 50 trim run a high ten? Seems to me nobody has beat Shepards 20G et of 10.7 with a PTE turbo.

50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world

you forgot you're on dsmtuners. did you expect information that was actuallly based on facts and experience or sometihng?

20g is an EXCELLENT turbo, so is the 50 trim. the point i was making was that the 50 trim PTE is cheaper, and will accomplish his goal for power, with equal product quality. i personally am a fan of the garret over a 20G because ofthe mix and matchability.. there's really no where to go from a 20G but to garret, so why not jump straight to a garret setup with equal potential and then you're ready in case you want to go faster? of course that's a useless arguement now with teh PTE bolt-ons... SCM50 and SCM61 are just hte next big celebrity turbos.. they do their jobs well though, so get ready to see them EVERYWHERE, being so cheap, they are very easy to get your hands on.
 
Originally posted by NDgsx
So uh when did a PTE 50 trim run a high ten? Seems to me nobody has beat Shepards 20G et of 10.7 with a PTE turbo.

50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world
50trim is the only turbo in the world

That's funny....I don't ever recall saying the 50 trim runs tens, or that the 50 trim is the only turbo in the world either. But just because the 50 trim has ran a 10 yet that you know of, you're saying that it can't?
 
Ok here's the thing. a Stock Motor 2G Motor with ARP headsuds can handle up to 400whp. A Stock 1G Motor with ARP head studs can handle 450whp.

Yes stock headstuds can handle a lot as well. But it's just safer to use ARP's if you plan to push the car.

Now as far as the 20g goes Yes the motor can handle it. However like anything else you just can't bolt it on with out having the supporting mods if you plan on running a descent amount of boost (meaning above 17psi) if your going to run less then that just stick with the stock turbo.

Anything higher then 15psi. if you don't have somesort of FMIC your just heating up the Air to much and probably not going to gain much more power.


To take full potential of any upgraded turbo the fallowing supporting mods should be on your car: steps 1-4 IMO is the order/way upgrades should go.

Step 1:
-Boost Gauge
-NGK BPR7ES Spark Plugs (or what ever you prefer)
-Spark Plug wires (at least 8.5mm)
-K&N Filter

Step 2:
-Aftermarket Clutch
-Boost Controller
-Downpipe/Exhaust (recommend 3")

Step 3:
-After market Fuel Pump
-larger Injectors (for the 20G recommend 660-720's)
-2.5" Hard I/C piping (if you go with an FMIC most come with piping)
-Fuel Controller
-Brake upgrade (You'll be going faster now so you'll need to be able to slow down faster/better as well also)
-Suspension upgrade (necessary if you plan on going fast you'll need better handling also)
-Aftermarket Tires rated for over 130mph (need better tires if you plan on trying to drive at higher speeds. goes along with safety)

Step 4:
-FMIC
-Logger
-Porting of the exaust manifold/ 02 housing (if necessary)
-Turbo
-Intake
-ARP's
-LSD if your FWD

Step 5:
-Cams
-Sheet Metal Intake
-Throttle Body if you have a 2G (swap to a 1G TB)

Step6:
-racing seats
-Harness's
-Cage
 
Originally posted by rph74
I was running 18psi, tuning it for pump gas. The problem I had when tuning was that I kept on getting a "pop" backfiring sound when initially accelerating at WOT. It happened no matter how rich, or how lean I got. I should have known not to press my luck that day, but after about 18-20 3rd gear pulls I finally hurt the motor. Lesson learned.

18 psi from 50 trim + several mad 3rd gear pulls = blown motor (0 compression n 4th cylinder) This was first night I got it all put together.

Now I am having rebuilt motor with 1g extrude honed heads put on my rig. Get it back on tuesday.:cry:
 
what mods did you have the day it blew? I've ran as high as 24 psi on a much smaller turbo, and never had that happen.
 
haha wow it this thread became the 50trim vs 20g battle haha but yea i got all the mods listed up there except ported exhaust manifold and lsd but everything else is checked off the list
 
If he wants the 20g then he should get it. It may make sense to most of us to go for the pte50, but if the man wants a 20g then give him a 20g!!!!
 
Originally posted by GSntncT
That's funny....I don't ever recall saying the 50 trim runs tens, or that the 50 trim is the only turbo in the world either. But just because the 50 trim has ran a 10 yet that you know of, you're saying that it can't?

"It's bigger, and has way more potential than the 20G."

No you didn't say it did, but you did imply that a PTE 50 trim would indeed outperform a 20G.

There is a car that has run 10s with a 50 trim, FP Green, Curt Brown.
10.760 @ 130.80
I'm not talking about any 50 trim compressor wheel turbo though, just the PTE unit.

I just find all these threads on turbos funny that's all.
 
I'll agree PTE's 50trim is bigger then my S20G. At least in my real world experience.


My friends 1G AWD with basically same set up as me (same compression, equivilant FMIC, etc). except he runs the AEM and I'm running Link. running both 20psi.

He would wipe the floor with me. IMO he is pushing between 40-60whp more then I got out of my HRC S20G Set up.

He traps at 116 on pump I trap at 110 on pump.


The reason why the 50trim was suggest is because it's in the same price range as the 20G and will produce more power.
 
i ran 24 to 26 psi on a stock engine, and a TDO6H 20g. no problems, that is until i went head on with a 1 ton truck :(
 
How do you like your TD06H 20G? Any regret going with that turbo? How's the spools? Performance? If you were to start over again, what turbo would you get? Thanks!
 
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