Civic/5th Gen K24 Frank build by SpeedyGee

Discussion in 'Project & Modification Logs' started by SpeedyGee, Friday 22nd Jul, 2016.

  1. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
    14,999
    5,591
    4
    I built this K24 frank engine last year, just came across the pictures of it and thought I'd post up a thread about it.

    Frank ?? Whose Frank ? A K24 Frankenstien engine is the term given to a K24 bottom end married with a K20 head (from a Civic Type-R). The idea is that you get the torque advantages of the bigger bottom end and and the higher flow advantage of the sportier heads from the Civic Type-Rs. Couple this with more aggressive cams and a 50 degree VTC (Accord K24A3's only have a 25 degree VTC), you can get some mad improvements over stock torque and BHP figures.

    Here's the donor engine I was given to build up :-
    20150306_160724. 20150306_160715.

    So let's crack and see what we've got to work with.
    Taking the rocker cover off shows quite a grimey engine underneath, looks like previous owners have been using cheap oil and not changing it very often
    20150306_162756. 20150306_162807. 20150306_162810. 20150306_170736.

    Looking at the spark plugs, seems to indicate some oil is being burnt
    20150306_161958.

    With my suspicions raised about the viability of actually using this engine as basis for building a K24 frank engine, I investigated further by pulling out my trusty Leak Down detector (didn't bother doing a compression test as that tells you very little, the answer is two binary).
    Low and behold I find that the engine is actually in bad health and as it stands it would be a non starter.
    1. 2. 3. 4.

    I immediately call up the owner and discuss the situation with him. He tells me that he got the engine cheap, it was already out of the car so he didn't see it running and didn't know that it was a non runner when taken out of the car for selling. He's panicked, annoyed and doesn't know what to do now.
    So I advice that I should continue and investigate further.
    I redo the compression test and listen for where the air is leaking too (compression test wouldn't give you this information). It seems all the leakage is down to bad head/valves and possibly head gasket too.

    So I decide to carry on the strip down of the engine.
    Take the timing chain cover off (once again you can see all the baked on oil), chain off, valve assembly off and finally down to a bare head

    20150306_172131. 20150306_180119. 20150306_180014. 20150306_181442. 20150306_181454.

    Next up remove head from block
    20150306_182048.
    We're down to block now. Checking the pistons they are all quite solid with barely any free play in them (when parked at TDC), which is good news, bores all good, which again is good news.
    20150306_184058. 20150306_184109. 20150306_184114.

    So I pour some oil into two of the chambers at TDC, leave it a couple of days and see if any has drained away. None of it had, which is again good news. This is a very very crude test but coupled with everything that I had seen so far the block itself looked in fine health. I also checked the block surface with a straight edge and it was flat as a errr well a very flat thing.

    20150306_184920. 20150306_184925. 20150306_184935. 20150307_090958.

    It was now time to check the bottom end, so the engine was turned over, to reveal more signs of mucky grimey backed on oil
    Here you can see the massive oil pump with built in balancer shafts.
    20150320_162800. 20150320_162808.

    Oil pump removed, this engine really is a sight for sore eyes
    20150320_164732. 20150320_165320.

    With the investigation complete, I reported back to the owner that despites it's horrid looks, the bottom was a good un and it was just the head and the head gasket that were scrap. This was all good as we were going to replace the head with a K20 head anyway. The owner (now very relieved) went about sourcing a replacement K20 head as well as new head gasket, timing chain and tensioner.

    He'd already supplied with a K20 oil pump from a EP3 Civic Type-R (these don't have balance shafts built in). So I went ahead with getting this installed.
    To fit this there is one oil gallery hole that needs to be blocked and the oil pump needs to be errr ... "engineered to fit" ...
    This is the hole that needs to be blocked, it actually has a small insert in it with a tiny little hole in the middle. I don't have any pictures of it unfortunately. However I got it out by screwing a wood screw into it and pulling it out. This left this hole like so (left hand side one):-
    20150321_084238. 20150321_084248.

    Which I then block with a bolt (hole is already threaded), I applied thread lock to the bottom threads on the bolt and sealant around the top of the bolt.
    Gently tightened up the bolt and then cleaned up the sealant that have got squashed out. The thread lock will ensure bolt doesn't come loose and the sealant will ensure no oil can get passed
    20150321_084722.


    With this done, I now moved onto removing the material from the K20 oil pump to make it fit (the clin film I wrapped around the rest of the pump to ensure now swarf or other debri goes into the pump
    20150321_085644. 20150321_085655. 20150321_085702. 20150321_085708. 20150321_085714.

    With some fettling with the air grinder, I managed to get the oil pump to sit right. Oh and you'll notice that I did try to clean up the muck and baked on grime on the bottom of the engine as much as possible. Looking much better now huh
    IMG_20150321_144738. IMG_20150321_144725. IMG_20150321_144716.

    The owner managed to get a K20 head and had it refurbed.
    I then went about re-installing it
    IMG_20150321_145055. IMG_20150321_150940. IMG_20150321_150956. IMG_20150321_151036. IMG_20150321_151512. IMG_20150321_165123. IMG_20150321_174145. IMG_20150321_174155. IMG_20150321_174206.

    A Acura TSX intake cam was used as this is more aggressive than the standard UKDM Accord cam.

    Leak down test after assembly read like so
    20150307_110750. 20150307_111038. c4. c2.
    Near perfect :Thumbup: :party:

    With the engine built, the owner came along, cleaned outside of engine, gave me a different rocker cover to install .. this is how the engine looked before installing in a Civic EG.

    The final figures that this engine made once tuned was 255BHP and 210 ft lbs of torque. In a super light EG chassis the car is an absolute animal !!
    The engine is still going strong even a year later despite the heavy use that the owner puts it through.
    You've probably seen the car at many car shows.

    IMG_20150331_172640. IMG_20150331_211841. IMG_20150331_174642. IMG_20150331_210756. IMG_20150331_210803. IMG_20150331_210812. IMG_20150331_210836. IMG_20150331_210853. IMG_20150331_210901. IMG_20150331_210910.
    It has SHOW as well as GO !! :Smile:

    Garage tidied up and engine put on one side ready for installing.
    IMG_20150402_190241.
     
    Last edited: Friday 22nd Jul, 2016
    Loading...
    Nighthawk, mustnap, dinoc and 7 others like this.
  2. Zebster Expert Advisor ★ ★ ★ ★ ★

    United Kingdom .
    2,559
    1,246
    1
    Engine porn. Great stuff!
     
    Loading...
  3. BB Baboonface Valued Contributor ★ ★ ★ ☆ ☆

    United Kingdom James Chesterfield
    402
    337
    1
    Lovely work Speedy, nicely documented too.

    Also nice to see the K20 oil pump install and plugging the balance shaft oil galley in some detail. The end result makes some impressive numbers!
     
    Loading...
  4. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
    14,999
    5,591
    4
    Sure does.

    That coupled with an LSD equipped gearbox and super light EG6 shell it makes this car a right animal, easily sub 5 seconds 0-60 !
     
    Loading...
    BB Baboonface likes this.
  5. ukcl9 Senior Member ★ ★ ☆ ☆ ☆

    ukcl9 devon
    221
    73
    Could you post a list of which parts from each engine you used to make the k24 frank please

    Looks like you did a good job.i know where to come if i go down the k24 frank route
    - - - Updated - - -
    Would a set of skunk 2 tuner cam worked with the k24 frank
     
    Loading...
    SpeedyGee likes this.
  6. legend-ary Moderator Staff Team

    United Kingdom Legend The Big Smoke
    3,800
    2,258
    6
    :O holy non-smoking-VTEC! that is epic.
    Great build @SpeedyGee I am sure the bark of the engine was as good as its bite.. 255bhp in a EG is mad specially from a NA motor.

    Let me Google *will K24 fit in Honda Jazz* lol
     
    Loading...
    SpeedyGee likes this.
  7. Ichiban Founder Staff Team

    England CJ Leeds
    30,120
    6,376
    516
    :zen: Honda Zen, brilliant thread :salute:
     
    Loading...
    SpeedyGee likes this.
  8. Nels Moderator Staff Team

    I think we should call you 'The Baron' from now on...
    Baron Frankenstein :gotcha:

    On a more serious note, first class work there @SpeedyGee. Amazing what can be done when a master is at work.:Yoda:
     
    Loading...
    SpeedyGee and legend-ary like this.
  9. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
    14,999
    5,591
    4
    No mate, not suited to the bigger torquier engine. I'd look at either Drag Cartel 3.2s or 4s, or maybe consider Prayoonto 3's. Personally I'd go for the DC 4's with RRC intake and a 64mm TB (70mm is too big for street setup).
    - - - Updated - - -
    Sure will do when I get chance.
     
    Loading...
    legend-ary and BB Baboonface like this.
  10. dinoc Senior Member ★ ★ ☆ ☆ ☆

    Romania Bucharest
    287
    77
    4
    Awesome job!
     
    Loading...
    SpeedyGee likes this.
  11. NottsBiker Top Contributor ★ ★ ★ ★ ☆

    Ben Nottingham
    545
    98
    Typical a long block EP3 engine has come up locally for £300 when I'm skint :Frown:

    Tempting upgrade for all k24 owners this mod :Smile:
     
    Loading...
    SpeedyGee likes this.
  12. NottsBiker Top Contributor ★ ★ ★ ★ ☆

    Ben Nottingham
    545
    98
    Ps did you also use the sump from the EP3?

    I only ask as I believe that the EP3 pump won't fit in the Accord one. Just so I can begin to collect parts could you please confirm I need EP3 head and pump with TSX camshaft (any alternative to this?). I'd also like to fit a better inlet / TB at the same time so would you use RBC or RRC?
     
    Loading...
  13. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
    14,999
    5,591
    4
    You need the K20 oil pump, K20 crank baffle, K20 sump (yes it will fit) and you HAVE to use else the oil pump won't pick up oil properly.

    You'll need K24 timing chain, K24 guides, K24 oil pump chain and K24 oil pump chain guides, K24 dipstick.

    Don't use RBC you lose torque with that on K24, RRC is the one to go for. You want the 64mm FN2 Throttle Body.
     
    Last edited: Monday 25th Jul, 2016
    Loading...
    legend-ary likes this.
  14. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
    14,999
    5,591
    4
    There's a couple of sensors that need to swapped over from the K24 as the K20 ones have different shaped connector and won't connect to the K24 harness. I think the crank sensor is one of them.
    I'll list more as I remember them.
     
    Loading...
  15. NottsBiker Top Contributor ★ ★ ★ ★ ☆

    Ben Nottingham
    545
    98
    Thanks I'm in the thinking stage at mo.

    Mainly as I think my valve stem seals are losing oil and a refurb head swap makes sense for multiple reasons.

    Annoyingly the EP3 engine I mentioned is now on ebay 250 buy it now.

    By the way I meant sump in my other post but my phone changed it to pump.
     
    Loading...
  16. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
    14,999
    5,591
    4
    Yes I thought you did, I read it as sump (hence I said yes it will fit)
     
    Loading...
  17. NottsBiker Top Contributor ★ ★ ★ ★ ☆

    Ben Nottingham
    545
    98
    Thanks

    All in all a most helpful post :Smile:
     
    Loading...
    legend-ary and SpeedyGee like this.
  18. NottsBiker Top Contributor ★ ★ ★ ★ ☆

    Ben Nottingham
    545
    98
    Ps how do-able is this without removing the engine?
     
    Loading...
  19. SpeedyGee Administrator Staff Team

    England Speedy Birmingham
    14,999
    5,591
    4
    Flippin hard LOL

    The front mount is off, you need to lift the engine up to get sump off, in that state it's hard to support the engine.

    Doable but need to be support the engine reliably and securely.