Results 1 to 9 of 9

Thread: What I think of "MaxPeedingRod" (Chinese) Turbos

  1. #1
    Guest jay1017's Avatar
    Join Date
    Dec 2016
    Location
    Dudley
    Posts
    490
    Rides
    0

    What I think of "MaxPeedingRod" (Chinese) Turbos

    Some of you on here might know me and the fact that I professionally recondition turbos as a side hobby for the 200sx community going by the name JK Fab. Throughout my time of doing that I've never had my hands on a Chinese turbo and have heard both the good & bad stories from them. It's peaked my curiosity for a long time.

    Funnily enough about a month ago I was browsing another forum I'm frequently on and received a message from a company named "MaxPeedingRods", asking if I'd be curious to try one of their products. Long story short, they ended up sending me one of their GT2871/T28 copy turbos. Little did they know I kinda know my stuff with these.




    Accessories

    The unit came packaged well. It came with a manifold to turbo gasket , banjo bolt for the oil feed and a couple of washers. Personally, I would disregard the gasket, it's a thin and cheap, same as the regular stuff on eBay. The washers and banjo bolt look ok.



    First Impressions

    At a first glance, the unit looks pretty good. No fancy marking or identifiers anywhere though. It utilises a cheap Aluminium cast compressor housing like most Chinese made turbos.

    Just like the 2871R, it utilises a billet machined seal plate that mates to the compressor housing. This was attached with some sort of hard glue. However, since this copy turbo is a journal bearing core, I was hoping for the O-ring style seal plate. That allows for easy adjustment and a proper seal, I don't trust the machined seal plates from personal experience.

    Turbine housing looked to be great, very nice machining and clean casting. HOWEVER, the wastegate port under the actuator flapper is absolutely TINY in comparison to the flapper! This will certainly cause boost creep issues.
    I would advise to port this if you plan to run this turbo.

    Mounting hardware & brackets are all of high quality, arguably on par in quality with the OE Garrett ones.

    It looks to be balanced due to the markings on the turbine wheel, compressor wheel and compressor nut. This indicates that the parts have both been individually balanced and then the whole CHRA balanced on a VSR machine.




    Balance

    Since I have access to a VSR balancing machine, I decided to stick the core on. Usually a big killer of these Chinese turbos seems to be a lack of balance. However, since this unit looks to have been balanced I'm really hoping that it doesn't shoot off the charts in the VSR.

    Surprisingly the unit was very well balanced. It "passed" on our Turbo Technics VSR and kept below the maximum amount of vibration up until 70.000rpm. Due to this turbo having such a large compressor wheel, 70.000rpm is sufficient in this test. However, as rotational speed increased so did the vibration of the unit during testing so it may be slightly over the acceptable amount at a given rpm such as 100.000.







    Parts & Quality

    Now I've had the unit on the VSR, I got to disassembling it and this is what I found:



    Compressor Wheel

    Single plane balanced only. Otherwise looks and feels quality, although it is only a cheap cast wheel.



    Turbine Shaft

    The turbine shaft is identical to one you would find in a T25 or T28 turbo. The turbine end however, has a bigger turbine wheel to the same specs and design as a genuine GT2871R. It should be noted the GT2871R is a ball bearing unit and this copy is a journal bearing unit.



    Bearings

    This unit uses a 270* thrust bearing, stock in what you would find in a T25 or T28. However due to the size of the compressor wheel I feel like this would not suffice, and would certainly wear at boost levels above 12 psi. Ideally you would want a 360* thrust bearing due to the increased amount of oil flow and coverage.

    The journal bearings are the same size and dimensions as the T28 journal bearings which are bigger than the T25 bearings. Nothing wrong with these at all, look to be nicely machined too.

    It should be noted that the core design is completely identical to a T28 turbo. All of the machine work inside the unit looks nice too.




    Conclusion

    Overall, I don't think that there is much wrong with this unit. For a low boost application I think this turbo would work quite well. HOWEVER, if MaxPeedingRods would like to offer something even better, they should definitely change to a 360* thrust bearing & enlarge the wastegate bleed port. For a cheap unit that costs less than £100 if you know where to look, you can't really go wrong if you want to turbo for the lows.

    Alternatively if your too lazy to read this, I made a more indepth review on my YouTube channel here: https://youtu.be/0BJrmBvsdq8

    The images I took were to big to add to the thread without looking silly, so I have uploaded an album on IMGUR. Link is here: https://imgur.com/a/ygrltb4

    You can find this turbo on their website on: https://bit.ly/2Z3Pc8d
    And if you'd like a discount & free shipping use my forum name "Jay1017"

    I would like to make it clear that this is a completely UNBIASED review. I'm just going off what I can see, and being honest on what I think. At the end of the day I'm just another customer.
    Last edited by jay1017; 20-01-2020 at 12:48.

  2. #2
    Guest R3K1355's Avatar
    Join Date
    Nov 2006
    Location
    Yorkshire
    Posts
    12,024
    Rides
    0
    Good write up.

    I wonder if this is indicative of Chinese turbos in general, they used to be well known to explode on first use but this one seems perfectly usable.

  3. #3
    Guest jay1017's Avatar
    Join Date
    Dec 2016
    Location
    Dudley
    Posts
    490
    Rides
    0
    Quote Originally Posted by R3K1355 View Post
    Good write up.

    I wonder if this is indicative of Chinese turbos in general, they used to be well known to explode on first use but this one seems perfectly usable.
    Thanks!

    It seems theyíve progressed, a few of my friends have ran chinese turbos but Iíve never trusted them up until now.

    I made a video on the turbo a few days ago that goes a little more indepth. Iíve added the link to the end of the thread if your interested. Forgot about adding it!


    Sent from my iPhone using Tapatalk

  4. #4
    Guest R3K1355's Avatar
    Join Date
    Nov 2006
    Location
    Yorkshire
    Posts
    12,024
    Rides
    0
    I wonder if they'll develop them any further?

    I know some of the other names like Mamba offer billet compressor wheels and anti-surge housings.
    That does push the price up a fair bit though.

  5. #5
    Guest jay1017's Avatar
    Join Date
    Dec 2016
    Location
    Dudley
    Posts
    490
    Rides
    0
    Quote Originally Posted by R3K1355 View Post
    I wonder if they'll develop them any further?

    I know some of the other names like Mamba offer billet compressor wheels and anti-surge housings.
    That does push the price up a fair bit though.
    Iíve spoken to them and gave them some things Iíd like to see improved. I hope telhey take some of that into account.

    Mamba and Kinugawa offer some excellent quality, arguably the best aftermarket billet compressor wheels available. I use them quite frequently.


    Sent from my iPhone using Tapatalk

  6. #6
    Guest R3K1355's Avatar
    Join Date
    Nov 2006
    Location
    Yorkshire
    Posts
    12,024
    Rides
    0
    Quote Originally Posted by jay1017 View Post
    Mamba and Kinugawa offer some excellent quality, arguably the best aftermarket billet compressor wheels available. I use them quite frequently.
    Thats very interesting to know.

    I know they're pretty ubiquitous on eBay and such but I wasn't sure if people in industry thought they were decent.

  7. #7
    Engine Builder Mark's Avatar
    Join Date
    Nov 2002
    Location
    Bas Vegas
    Posts
    93,162
    Rides
    0
    The Chinese have progressed in quality over the last 5-10 years. Who even 5 years ago would have entertained a Chinese phone? Now everyone is rocking a Huawei

    They copy and then perfect.

    But there is still Chinese tat out there so dont think everything is to the same standard, its just now because its Chinese doesnt means its instantly rubbish
    Quote Originally Posted by silverzx View Post
    I like Mark, he seems fair.
    Quote Originally Posted by Slip_n_slide View Post
    Mark is right.

  8. #8
    Guest jay1017's Avatar
    Join Date
    Dec 2016
    Location
    Dudley
    Posts
    490
    Rides
    0
    Quote Originally Posted by Mark View Post
    But there is still Chinese tat out there so dont think everything is to the same standard, its just now because its Chinese doesnt means its instantly rubbish
    I 100% agree.

    At least we now know that one chinese manufacturer actually makes an effort to make these things durable and of decent quality, unlike some of the others you find on aliexpress or the likes



    Sent from my iPhone using Tapatalk

  9. #9
    Member sx rider's Avatar
    Join Date
    Apr 2008
    Location
    West Sussex
    Posts
    2,682
    Rides
    0
    Good info mate, can’t believe how cheap these are

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •