88 replies to this topic

[BoostedS70]

so i think im gona buy a 50 trim for my 98 LPT . I have every supporting mod needed to do it safely . im thinking it is the best choice over an 18T because it will be slower spooling so it wont make big boost till 3500 rpm+. ther is only 1 part more commpression on the LPT which I dont feel is anything to worry about in terms of reliability. This will be my daily driver im and going to run 14psi daily. Im going to go internaly gated. Just because i dont want to spend more $ then I have to plus the boost will be low so I dont see a problem running an internaly gated turbo. So id like to get some opinions on what you guys think. I chose the 50 trim because it seems to be the cheapest and easyest turbo to install outside of the td04 family. I know im gona get lynched for saying this and i dont want anybody to assume/infer anything what do you guys think about ebay turbos . im not talking about what you heard from someone or a review you read on the interweb, but real personal experience . I see it as if you buy a ebay turbo and it lasts a year you paid a 140$ for it so thats a risk im willing to take. let me know what you think guys thanks.

[ARD - Lucky]

I tuned a M4.4 LPT on an 18T with decent results, boost was hard to tame in but it did manage pretty well at 16psi.

That was 3 months ago and still going strong, not sure if it's been dyno'd yet.
As for that turbo, I'm not familiar with it so I can't really weigh in unless you have a compressor map to share??

[fischmama]

Prob have a good 15k or more on my chinabay turbo. Running 19PSI right now. I do recommend going with an external wastegate though. I had a hard time controlling boost, so much that I had to port the wastegate hole quite a bit.

Not a bad choice, but get used to a different driving style if you get one with a .63 AR exhaust housing.

[BoostedS70]

ARD - Lucky, on 16 November 2011 - 03:25 AM, said:

I tuned a M4.4 LPT on an 18T with decent results, boost was hard to tame in but it did manage pretty well at 16psi.

That was 3 months ago and still going strong, not sure if it's been dyno'd yet.
As for that turbo, I'm not familiar with it so I can't really weigh in unless you have a compressor map to share??

yea this i think is acctualy the route im gona pursue after talkin a little with my boy the 18t seems to be more suited to my driving style/setup. its good to know that you can tune it for me lucky youve not let me down so far and i have been more then pleased with ur work. im gona get an ebc when i get the 18t thow that way we can really fine tune it

[AverageVolvo]

To4e 50 trim with .48 ar is what you meant to say and an Atp ultimate internal wg will not give you any boost problems until you go over 18-20 psi. IMO

A good ebc will tame the boost. I tamed the wild 19t with 7cm with no hassles. once I had an ebc. and the to4e was much easier IMO.

But yeah the 18t is definitively better suited for your needs.

As far as china bay turbos. Godspeed seem to be relatively reliable. and their customer service is excellent. should you have a problem under their 1 yr warranty.

[dublin14]

50 trim 63ar is a 19psi+ turbo, Anything under its not really doing its best. You wont even see 19psi with with a LPT motor and that Turbo. An 18T and a LPT with an ARD tune would be a quick car.

[URO_S60]

So then for the LPT's a 18T with supporting mods at 17-18psi is about best we'll see on stock internals. No 50 trim even set to 14-15psi that would be too much pressure for the higher CR, couldn't good boost control, correct timing/fuel mapping, and some water/meth to keep temps regulated be able to control the 50 trim at a mild boost setting?

Or am I not reading it right and that it can be done, however we wouldn't see the full effects of the 50trim because it's potential is at a much higher boost range 18+ psi?

(I have ME7 so would there be a whole different topic than what the OP's LPT will be able to handle also?)

[fischmama]

AverageVolvo, on 16 November 2011 - 08:31 AM, said:

To4e 50 trim with .48 ar is what you meant to say and an Atp ultimate internal wg will not give you any boost problems until you go over 18-20 psi. IMO

Well even with the wastegate flapper wired open (fully open) I was able to build 15PSI at redline, and yes that is with the ATP Ultimate. Just throwing that out there.

[550]

dublin14, on 16 November 2011 - 12:12 PM, said:

50 trim 63ar is a 19psi+ turbo, Anything under its not really doing its best. You wont even see 19psi with with a LPT motor and that Turbo. An 18T and a LPT with an ARD tune would be a quick car.

Why not??

URO_S60, on 16 November 2011 - 02:33 PM, said:

So then for the LPT's a 18T with supporting mods at 17-18psi is about best we'll see on stock internals. No 50 trim even set to 14-15psi that would be too much pressure for the higher CR, couldn't good boost control, correct timing/fuel mapping, and some water/meth to keep temps regulated be able to control the 50 trim at a mild boost setting?

Or am I not reading it right and that it can be done, however we wouldn't see the full effects of the 50trim because it's potential is at a much higher boost range 18+ psi?

(I have ME7 so would there be a whole different topic than what the OP's LPT will be able to handle also?)

I ran 22 PSI on my K24'ed GLT plenty of times. You are far better off with a 50Trim as it won't be as volatile. Less prone to low end spool.

All the people I see who say it can't be done, just don't have a clue. The only reason I ever had issues on my setups were flukey shit. I detonated on the last engine by some random occurence, it was, however not because of the GLT engines higher compression.

Edited by 550, 16 November 2011 - 02:37 PM.

[URO_S60]

I mean from what I've been reading these mistu compressors (anything under the 20g) makes for a tough time to net 300+ whp. With that being said and hypothetically speaking if my goal were to put down "310"awhp wouldn't want to find a turbo that will support 350hp and then that will give me room to play with if I want to add on later. Not limiting myself to a 18/19T and barely if at all reaching that mark of "310"awhp.

I understand that it will cost a little extra to get a non mistu family of turbo to bolt up and get running but once its there and doing its job it will be worth it seeing I'd have met my goal. I just don't want to set a goal once I start piecing the setup together and screwing myself with a poor turbo choice and then be behind where I intended to hit.

[BlackT5]

dublin14, on 16 November 2011 - 12:12 PM, said:

You wont even see 19psi with with a LPT motor and that Turbo. .

Wat?

[BoostedS70]

I like the fact that the 18t bolts rite up with no modifications required. I dont like the fact that the boost is very hard to tame with td04 turbos. and i also dislike that they fade towards redline. that being said i think the 18t with an rpm dependant EBC is a good place to start, until I get my hands on some green injectors and a water meth kit. what is the maximum PSI you can run on a 18T with white injectors.

[850wagonT5]

Good grief...only on VS is 0.5 points of compression a big deal. Lol. Op, do it. You will love it. Even at only 15 psi, which is what I run daily driving, that turbo is fun on the hpt motor. On the lpt it will he even more so. If you get any ping, simply adjust your boost and your octane until its gone - and the 0.5 point difference in compression is a moot point.

Plan on porting the wastegate hole like fish said...I had to hog it out too. Your boost may differ but I get the surge around 3600 ish. But yes...at 15psi its fun and I am toe to toe with a friend on a 19T @ 17psi ans his car weighs 500 lbs less on the scale (bare metal inside, no dash, etc). At 20psi...fuggetaboutit.

[dublin14]

550, on 16 November 2011 - 02:36 PM, said:

Why not??




I ran 22 PSI on my K24'ed GLT plenty of times. You are far better off with a 50Trim as it won't be as volatile. Less prone to low end spool.

All the people I see who say it can't be done, just don't have a clue. The only reason I ever had issues on my setups were flukey stuff. I detonated on the last engine by some random occurence, it was, however not because of the GLT engines higher compression.

Why not what? You think running 19psi on a stock LPT motor with a 50 trim is good idea.

[550]

dublin14, on 02 December 2011 - 12:45 PM, said:

Why not what? You think running 19psi on a stock LPT motor with a 50 trim is good idea.

I think anyone saying it can't be done is really just cheek flapping, in all honesty. Nothing against you personally. But what makes you think it can't be done? What are the factors you are taking into account that say it can't be done?

[dublin14]

550, on 02 December 2011 - 12:55 PM, said:

I think anyone saying it can't be done is really just cheek flapping, in all honesty. Nothing against you personally. But what makes you think it can't be done? What are the factors you are taking into account that say it can't be done?

I never said it cant be done...big difference between saying it cant be done and I wouldnt suggest it. A 50 trim at 19-20psi flows enough to get 400whp. Why all of a sudden is 19psi on a 50 trim or a even say 3076R which almost identical in size, a good idea on a stock 13yr old LPT motor. Im sure it can be done but how long will it last.

[550]

dublin14, on 02 December 2011 - 01:19 PM, said:

I never said it cant be done...big difference between saying it cant be done and I wouldnt suggest it. A 50 trim at 19-20psi flows enough to get 400whp. Why all of a sudden is 19psi on a 50 trim or a even say 3076R which almost identical in size, a good idea on a stock 13yr old LPT motor. Im sure it can be done but how long will it last.

In that case, many of us may not bother modding our cars. Because if you are using a period correct engine, that means the majority of them are 13 years old.

But I can tell you a 50 trim or 60 trim, and the characteristics of spool of either, are better for these engines than the Mitsubishi turbos with higher boost. Low end boost KILLS these engines.

[dublin14]

550, on 02 December 2011 - 01:32 PM, said:

In that case, many of us may not bother modding our cars. Because if you are using a period correct engine, that means the majority of them are 13 years old.

But I can tell you a 50 trim or 60 trim, and the characteristics of spool of either, are better for these engines than the Mitsubishi turbos with higher boost. Low end boost KILLS these engines.

Sorry pal, but sticking a 50 trim turbo at 19-20psi that can flow 400whp at that level is not good advice on a stock LPT motor. You really think thats good advice. I dont!

[550]

dublin14, on 02 December 2011 - 02:10 PM, said:

Sorry pal, but sticking a 50 trim turbo at 19-20psi that can flow 400whp at that level is not good advice on a stock LPT motor. You really think thats good advice. I dont!

Well I guess since I my actual experience with the GLT engines don't count... ;-)

[dublin14]

And also saying many of us shouldnt bother modding our cars based on me saying that a 50 trim at high boost on a LPT isnt a good idea, is just twisting words. My point is slapping a big ALL GLORY TO THE HYPNOTOAD turbo at 19+psi on a 13 year old stock LPT is pushing that motor to its limits or beyond. Not a great idea no matter how you slice it.