Engine Drivetrain R53 Catcams 469 profile and adjustable cam sprocket

Discussion in 'Tuning and Performance' started by ioanpara1181, Mar 17, 2021.

  1. ioanpara1181

    ioanpara1181 New Member

    Nov 23, 2020
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    #1 ioanpara1181, Mar 17, 2021
    Last edited: Mar 21, 2021
    Hello!!!

    I have a big problem with the catcams 469 profile camshaft on my facelift R53 and I want your opinion and help!

    So to start with my mods are:

    -17% reduced pulley
    -Ported and polished cylinder head
    -Catcams 469 profile camshaft
    -Orranje stealth intake with K&N Air filter
    -Bypass valve stronger spring
    -Supersprint 4-2-1 header with 100cps free flow catalyst and resonated JCW exhaust (63.5mm)
    -550cc Bosch injectors
    -Pro alloy motorsport intercooler
    -bkr8eix sparkplugs

    The car came out from engine rebuild and everything is new! We checked the car for air leaks, tmap and map sensors, oxygen sensor, fuel pressure regulator, fuel pump, spark plugs, blocked cat, spark plugs wires, coil pack.. Everything! The cars header-manifold glowing with the stock map but also with the tuned map and hesitates- stalls when starting to move in first gear when you are in positive low boost. If you try to start gently with vacuum its starts to move nice! The hesitation occurs when the cars water temp is below 70 degrees. When is hot it's just only glowing the manifold. We set the 469 timing on tdc like the OEM camshaft. Now we tried to retard the timing one tooth. The car now with the Oem injectors(320cc) runs fine and starts moving fine but still slightly glowing red the manifold (not like before we changed the timing).

    No we are waiting to tune again the car and see how its going! One thing that you have to know is that the car when tuned with this setup and the tdc oem timing managed to make 247 crank hp but with the symptoms that I referred above..

    Do you believe that an adjustable camshaft sprocket will give a solution to our problem or is there something else that we have to check for??
     
  2. MCS02

    MCS02 Moderator
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    How lean are you running it? It sounds like it may be to lean. You may want to get bigger injectors. Who did the head and tune?
    An adjustable camshaft sprocket would help if it’s a timing problem. Glowing exhaust manifold sounds like a mixture problem. Just off the top of my head
     
  3. ioanpara1181

    ioanpara1181 New Member

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    #3 ioanpara1181, Mar 18, 2021
    Last edited: Mar 21, 2021
    The innovate gauge with the tuned map on idling is showing stoichiometric 14.7 afr with the 550cc on and the manifold still glowing red and stalling on start moving the car! That's it before retarding one tooth the timing. Now we are in the phase that we put again the stock map and stock injectors (320cc) and the car is starting ok, moving ok and slightly glowing the manifold. But still glowing.. We are located in Greece so my mechanic did the porting and polishing on my head! The tuner also is a friend of mine very well known in the Mini society but he can't come to Greece due to Coronavirus situation and we tuning the car remotely!
     
  4. 00Mini

    00Mini Well-Known Member

    Feb 24, 2013
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    If’n you are running catalytic converter it maybe going bad causing a restriction in the exhaust.
     
  5. ioanpara1181

    ioanpara1181 New Member

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    We've checked the cat and it was ok! Mufflers too!
     
  6. 00Mini

    00Mini Well-Known Member

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    I was really hoping that you would find a clogging catalytic converter as from your description it’s the one constant you have between the two tests.
     
  7. ioanpara1181

    ioanpara1181 New Member

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    I hoped for that too! It could be an easy fix...:D:Banghead:
     
  8. Whine not Walnuts

    Whine not Walnuts Active Member

    Mar 14, 2017
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    You said you checked but high egts and hesitation while cold are signs of a leaking intake gasket. Vacuum readings are crazy and it may not throw a code. Be sure the rubber hose near the upper engine mount is properly attached and follow it to the fuel regulator as well.
     
  9. ioanpara1181

    ioanpara1181 New Member

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    We've changed intake gasket and checked fuel regulator vacuum hose.. we had the same thought when first time problem occured but nothing changed after that...
     
  10. ioanpara1181

    ioanpara1181 New Member

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    One thing that came in my mind is that in the fuel regulator line we put the boost pressure gauge T line that goes to gauge sensor..
     
  11. ioanpara1181

    ioanpara1181 New Member

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    Hello guys again!

    Today i've tried new test base file that my tuner send us and this is the log from cold start until I saw the manifold again glowing red... As I understood right after a conversation with my tuner the car has negative spark timing advance when idling and this is causing many problems.. Engine load is 60-65% and throttle body opening about 5-7 degrees on idle! Short fuel trims are negative 20-25%.. Now we tracking down again the problem!

    If anyone has any thoughts on the situation it will be very helpfull for me!

    I am uploading for you to see a log from cold start and only idling!

    https://1drv.ms/u/s!AhWnF_99c31kkIte4IIWG4_dYj0SRg?e=y9n9aV
     

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