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Installing bigger turbo info

 
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  #1 (permalink)  
Old 10 Jul 2019, 03:51 pm
shelbyzman's Avatar
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Default Installing bigger turbo info

I'm thinking down the road (since my current turbo is fine), but I was wondering what hp increase there would be when going to this turbo from the stock one https://www.modernperformance.com/pr...o-upgrade-kits Are there any other upgrades from the stock engine that would be needed to accompany the new turbo? Would fuel mileage increase or decrease with a bigger turbo? Reason I am considering this down the road is that the price (under $500) for a turbo you don't have to send in a core is pretty good!
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Last edited by shelbyzman; 10 Jul 2019 at 03:55 pm.
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Old 18 Jul 2019, 12:06 pm
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Default Re: Installing bigger turbo info

Anyone? Would any other upgrades be needed if I change the turbo to the one mentioned in the first post?
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Old 18 Jul 2019, 12:35 pm
Fk5 Fk5 is offline
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Default Re: Installing bigger turbo info

Quote:
Originally Posted by shelbyzman View Post
Anyone? Would any other upgrades be needed if I change the turbo to the one mentioned in the first post?
I don't know anything about that particular turbo, but I think it is a BWS (Big Wheel Stock) turbo. You will need, at a minimum, a tune to take advantage. Otherwise, your car will probably run worse. We have a typically small turbo. This leads to quicker spool up/less lag, but limits top power.

You will probably need to provide additional fuel, I'm not sure a tune would be enough. As for mpg, it would typically be worse, but you never know. The TT Stealth guys actually got better mpg with bigger turbos because they were not on boost at typical highway speeds, and they fed less fuel.

I'm surprised nobody else piped up, but as Nitro usually says check with the manufacturer. Modern Performance is typically a reseller, but they are reputable and I am sure they will tell you what you need and give a general idea of the power level you can expect. There are other vendors that can provide similar products or cheaply redo your stocker. Chris from Turbos Unleashed is a member and usually very helpful, but he may have gotten into it with some here. There are certainly others that are excellent.
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Old 18 Jul 2019, 01:13 pm
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Default Re: Installing bigger turbo info

I really did not want to answer , without being rude, and most already know how I am pretty straight forward no BS, shelbyzman is far from this mod on his PT Cruiser.

But for some that have done all the pre-mods to support a larger Turbo the gains over stock verified power out put comparing with actual reliable gains from a larger TURBO and what has been accurately report vary so much it is hard to conclude what would be normal?

The stock Turbo is well capable to produce 300HP+ and very reliably with supporting mods.


shelbyzman based on reading most all your threads and responses and those from other's, I would recommend to buy an inexpensive TURBO core and clean up and do some DIY porting. Not only will you notice a nice little performance engine response increase but you will save a lot of money over a big wheel Turbo and other parts and have the satisfaction in doing something yourself.

Here are 2 of my stock cores Turbo's (not my BIG WHEEL) one is ported and cleaned up the other is completely the stock casting.







Adding Performance PT CRUISER parts
Adding Perfromance PT CRUISER parts
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Old 18 Jul 2019, 01:49 pm
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Default Re: Installing bigger turbo info

Thanks for the info. The price of the one I was looking at is less than $500...so I was thinking in the future when mine goes out, it isn't too expensive for a new turbo and without a core charge. How hard is it to bore out the stock turbo...what tools would be needed? I know everybody probably thinks I'm cheap not wanting to do premium fuel...but my pt is my daily driver and it's about a 90 mile round trip. So the extra cost of premium even over midgrade is a concern for me. I am trying to figure out all the mods I can do without having to go with premium (would be around $300 more a year than midgrade and $600 more than 87 which I don't run anymore). I know the cheapest and biggest upgrade would be to do the stage 1 computer, but that of course would mean premium fuel. I probably just need to be happy with what I have and quit trying to make it "faster", lol.
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Last edited by shelbyzman; 18 Jul 2019 at 02:29 pm.
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Old 18 Jul 2019, 03:40 pm
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Default Re: Installing bigger turbo info

If you go with a bigger Turbo to adjust everything needed in able NOT to use premium seems a waste of everything.

A few simple porting tool items and at least an adjustable speed drill. Oh and wet sand paper. So aside from the drill which most DIY have already your investment to do a port project might be about 50 bucks?

One thing to mention unless you get rid of the cast goose-neck on the exhaust manifold most power increase achievement are going to be harder to get starting at about the 250hp mark.
Keep in mind when I mention all these power numbers it is based on and engine that has been health checked and initially DYNO'd at close to what the model year factory claims it to be.
My 2005 GT in near perfect engine condition did not make 220 HP as claimed. I have also Dyno'd a few other PT's over the years and none of them came up to the claimed factory power output.



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Last edited by NitroPT; 18 Jul 2019 at 03:48 pm.
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Old 18 Jul 2019, 03:52 pm
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Default Re: Installing bigger turbo info

That is a pretty obvious difference between those exhaust manifolds!
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Old 19 Jul 2019, 09:23 am
Fk5 Fk5 is offline
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Default Re: Installing bigger turbo info

Quote:
Originally Posted by NitroPT View Post
My 2005 GT in near perfect engine condition did not make 220 HP as claimed. I have also Dyno'd a few other PT's over the years and none of them came up to the claimed factory power output.
How did you dyno them? I would assume that you are using a wheel dyno. Obviously, the power is going to be well lower than at the crank the way the factory tests. Are you talking about after the correction factors were applied? How low on power do you find them?
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Old 19 Jul 2019, 11:49 am
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Default Re: Installing bigger turbo info

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Originally Posted by Fk5 View Post
How did you dyno them? I would assume that you are using a wheel dyno. Obviously, the power is going to be well lower than at the crank the way the factory tests. Are you talking about after the correction factors were applied? How low on power do you find them?
To preference a little about my experience with DYNO's.

I owned and operaed a Engine DYNO in my Performance Engine Machine shop
I owned and operated a Chassis and a portable Dyno.

In the last several years I have participated in many DYNO day that I was the DYNO operator.

I don't post DYNO number form myself or anyone I have done a DYNO information service as EVERY application is different.

I carefully calibrate the DYNO each day and sometimes again during a day if there is more then 50 runs performed.

I carefully set the DELTA so that any DYNO operator in the country can read how I set the DYNO up and calibrate their DYNO to run a comparison on how the results were acquired.

I am of the opinion that a DYNO service if for gaining information about the engine output and for use to dial in parts or to do a Performance ECU/EFI calibration.


I try to always recomend that anyone that is investing money on PERFORMANCE HARD PARTS to get a base line DYNO run so you can later do another DYNO run and compare the results of all the parts installed to increase the engines output.

FK5 I think you may either mis-understand about factory HP advertised or just need to learn about how and what requirement are set by the FEDERAL Government on how and what can be reporter /advertised about factory engine output.

The MYTH about take 10% was something that got started so long ago no one really accurately can tell you how that started and why it became a norm when you talked about adjusting for what some thought was real power output after the MYTH compensating %.

I really don't want to get into a DYNO DEBATE again and also from anyone ( no offence to you or others) from people that don't really have experience with having their own vehicles DYNO'd from many different shops and model DYNO's or have them selves owned or operated a DYNO.


So I will repeat again....DYNO's IMHO are for finding good information about the engine state of output and GREAT way to see results of parts installed to increase output or to use as a active tool to DAIL in al parts and controls that effect the engines power output.

BRAGGING RIGHTS can be achieved by simply tipping the DYNO operator a 20 on the side and sliding the calibration in favor of showing a higher results.

Now everyone raise your handsor thumbs up if you have ever actually gotten an official weight of your vehicle and compared that to what the factory claims? LOL



Is Your Dyno Lying?

http://www.ptcruiserlinks.com/forum/...yno-lying.html

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Old 20 Jul 2019, 08:01 am
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Default Re: Installing bigger turbo info

I've never had any of my cars on a dyno and never will. I'm very secure in my masculinity and don't feel the need to compete with lesser men in anything.
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