Charged K20a Prelude Type S

bennyboy · Post by **bennyboy** » Sat Mar 15, 2014 9:56 am

Punctured by a wheel weight?!!

Must say, I do like your 'bracketry work' Sir!

Mudgey · Post by **Mudgey** » Sat Mar 15, 2014 7:36 pm

Thanks! Bennyboy, only the very front one to get perfect now! The other 3 fit perfectly and as everything is CAD drawn I can make a set if anybody wants to go down the K20 route!

The electric power steering is relatively simple to install. Its a second generation Toyota MR2 pump made by Toyoda (that's not a spelling mistake). Its got an onboard ECU and apparently the MR2 outputs the same VSS signal as our H22 and K20 gbox's, therefore once hooked up the PS pump will power down at highway speeds etc. I've had to purchase a big 100a resettable trip & a big 100a relay, this is wired in directly to my battery cut off switch and will be wired into a switch on the dashboard so I can turn the unit on or off.
Ive had a high pressure hydraulic line made up that goes from the pump to the rack, then used a 45° hose fitting on the return side along with the stock metal pipe that includes the cooler. It keeps the runs nice and tidy and away from the exhaust.

Any ABS experts on here? I am having trouble with my ABS. The ABS light is illuminated and won't go out but is throwing no codes on the cluster. The only difference is I don't have the original ECU, so is there a power, earth or VSS signal that could be missing? I also don't have ATTS any longer, and the car will not start if the ATTS ECU is not installed!!! I see that the ABS outputs all 4 wheel signals to the ATTS computer but I can't see any other wires to and from.. Any thoughts on what I could try?

Post by **RattyMcClelland** » Sat Mar 15, 2014 9:07 pm

That's the type S active abs. You might have to get a standard vti abs ecu and rewire it all.

Mudgey · Post by **Mudgey** » Wed Mar 19, 2014 10:52 pm

Looking at the diagrams the only difference is the active ABS has outputs for each wheel sensor to the ATTS unit, I have not yet discovered any other wiring differences. This leads me to believe its got to be a power/earth problem.

I am working through the ABS fault find flow diagram but am struggling to find the 22p connector. Is the ABS ECU attached to the SRS ECU or is it located somewhere else entirely?

Cutz · Post by **Cutz** » Fri Mar 21, 2014 10:12 pm

Very very nice mate, glad the MR-S power steering pump info was useful for you

love the quality of your CAD work mate.

i'm sure one day i'll get another prelude and when i do i might just have to go the K20 route

Mudgey · Post by **Mudgey** » Sun Mar 23, 2014 2:08 pm

Cheers Cutz! The info was very handy, thanks!

So unfortunately there may be some more issues. I was tidying up the car, checking the oil levels etc and found there was some slight sludgy poo on the underside of the filler cap...
I have never experienced this problem before so any thoughts on this are appreciated:
I am 99% sure the headgasket is fine.
The water pump housing channels the water flow into the engine but also there is a crank ventilation passage to a breather, these are sealed off by a rubber o-ring. There is a possibility that the o-ring could not have sealed correctly when I fitted the pump housing back on.
My last thought is it could merely be condensation. When the engine wasn't being worked on it was covered over with clean rags but moisture could still circulate, it was reasonably cold the last couple of months. So now since the engine has been running could it be that the moisture inside the engine has evaporated and condensed on the rocker cover?

I drained the oil and could only see one tiny bit of cream... Would it be safe to run the engine after cleaning the rocker cover, remove any sludgy bits I can see in the head & then flush the engine through with a few oil changes?

Pictures below:

And my last question is what colour do you think I should redo the rocker cover? Considering I have a black and silver theme I was thinking of getting it powdercoated textured matt black along with the spark plug cover, it should compliment the dip stock and oil filler cap nicely, what do you guys reckon?

mercutio · Post by **mercutio** » Sun Mar 23, 2014 3:43 pm

will probably be just condensation

Post by **NafemanNathan** » Sun Mar 23, 2014 8:30 pm

Condensation was my thought as well. It is a Honda after all

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sun Mar 23, 2014 8:50 pm

That looks fine, if it's only done very short runs it'll be condensation.

Post by **Lude-dude** » Mon Mar 24, 2014 10:15 am

rocker looks good, I wouldn't go through all the trouble painting it again

Lude Generation

Charged K20a Prelude Type S

Re: Charged K20a Prelude Type S

Re: Charged K20a Prelude Type S

Re: Charged K20a Prelude Type S