TD05-16G Mitsubishi Evo VI twin scroll turbo onto CA18det detailed fitting guide

[Arnie]

I was thinking that maybe I'll contribute to this forum a bit since it was a great source of information and I got a lot of support from its members.

Btw, it's the CA18det in a Jap S14 Silvia, lol

I've finished working on the EVO TD05HRA-16g6-10.5t turbo conversion. I chose this turbo due to its twin scroll design, big wastegate (no boost creep at all) reliable core, cheapness and possibility to rebuild it myself if things go wrong. It can take massive levels of boost and I saw it making 390bhp on the EVO. However, one look on the stock Evo manifold compared to Nissan one and you instantly know that Mitsubishi engines are of far superior design (runners are twice bigger, clean inside, built for power), the exhaust ports on CA18det look like a joke compared to Mitsubishi ones.


IMPORTANT NOTE: It takes a LOT of hassle and effort to do it. Between sourcing parts and getting it all fit it took me couple of months because you need to research both Nissan and EVO. Honestly I wasn't that happy with responsiveness, once on revs it was a missile (front end was lifting up) but when run side by side against stage1 sr20det (t28r, HD chip, walbro, mani, fmic, intake, zorst) I must say I was disappointed as I expected same spool but it wasn't. In real life situation I'd choose his car due to faster response. But the ones looking for big numbers will be definately happy. One important thing to add is that I believe that proper mapping would transform the car as I was experimenting with CAS a bit and the difference in slow revs was massive so there is a lot of space for improvement. I couldn't shell out 500 notes for it, couldn't be arsed really. How comparison run could be described as this:

3rd gear, 3.5k revs. Full throttle. My car just jumps forward and other one becomes small item in rear view mirror very very quickly.

5th gear, 100km/h. Full throttle. My car initially accelerates as the other one and after few secs jumps forward building up the speed and distance very fast

3rd gear, 2k revs. Full throttle. My car is left behind for few secs but then surge of power and I overtook it with big difference in speed.

I run this turbo (1.15 bar, estimated 330 bhp), 95 ron fuel, std ignition timing with following spec:

rebuilt standard CA18det engine
good standard gearbox
clutchmaster stage II clutch
EVO 560cc injectors (they fit std rail but it needs to be reamed out, little job but can turn very wrong as drill got stuck in it and rail hit my nose!!!!! Very :censored: painful!!!)
z32 afm
ebay fmic kit (worked very well)
2.5" HKS Super Drager exhaust
3" downpipe
catalytic converter in place when taking vid but normally decat. Cat limited power A LOT.
screamer was deleted at later stage at it was ridiculous. Just stupid thing drawing cops attention
FORGE adjustable actuator with 1.1 bar spring (IIRC)
AVC-R (later removed as it wasn't giving any difference, properly set actuator on its own was just fine)

Let the pictures speak for themselves:

Turbo as I got it. Notice twin scroll design and size of the runners. There is a double wastegate so no problems with boost creep.






conversion plate laser cut from 18mm s/s, threaded in, flattened and countersunk in machine shop




1.25 hex bolts shortened to size



conversion plate on the block




power steering bracket cut out to make space for the conversion plate


evo manifold on



small issue here



issue sorted




how it sits




loads of space for elbow



turbo rotated and boost pick up threaded in:



FMIC take off



fabricating the exhaust elbow, multiple versions, made up from old R33 skyline exhaust






ready to be welded up



Finished welding - this was working although I didn't have welder, I was marking things up and bringing to my friend which caused many problems and required countless corrections. Unfortunately it's not the easiest way. Best to point weld when fabricating and then finish it.



test fit, braided hoses on



oil return fabrication (note the rubber material must withstand the heat, I used marine fuel hose)



some boost leak testing, lol



I don't have any photos from acuator fabrication, it required a very strong bracket (I ended up with angle iron as everything else was bending and boost was too late), shortening the rod, bending the rod in an s-shape.
On the side note, Forge are bloody w@nkers, the spring kit was cheap but shipping was just ridiculous and charged from credit card

Finished product (the actuator bracket would need some cosmetic work as it looks agro). Note the p/s reservoir moved away of the turbo and the turbo intake pipe. I retained the bit of original elephant trunk that had the breather take off:



Enjoy!

[pole drift]

Impressive work lad!! Fair play to you

[sponsor-a-panda]

Thats what i call thinking outside the box man!! Fair play!!

[D-turbo-lad]

very impressed lad was lot of research put into it

[Arnie]

Thanks lads, it was a lot of work, research and bit of money put in (not too much). Was breaking my heart to sell this kit but it's time to move on (and recover the money). I proved to myself that I'm capable of engine swap and custom turbo conversion, it was a great engineering excersise and well worth my while. I also learned basics of welding, bolt threading, fabricating, engine management and car electrics.

Was fun with that all, there is only one project thread on the net about evo on ca (George on sxoc) but he went flat out with it, custom manifold and the lot, it is completely unnecessary. Also there was almost no support with swapping CA onto s14

My personal preference is a t28r and I'd take it all day long. I reckon it's the best suited turbo for CA/SR (for my skillzzz anyway) Others may have different requirements so need something extra.

[g6mmc]

fair play lad for doin it

[tomsheen]

nice work man.. its the job to see the work you actually done after explaining it to me one night..
well done anyways tis a tidy job

[Spartacus]

Great thread, how much would one of those turbo's sell for?

Also, nice idea on the adaptor plate for the EVO manifold, but see the way they don't line up as direct as an sr20 manifold would on a sr20 engine, would this have any affect on flow/power? Were the ports EVO manifold a lot larger than the ports on the sr20?

[Arnie]

I was lucky because the ports on CA almost perfectly line up with EVO.

Runners on the manifold are massive and would prob line up with anything.

The manifold is very thick as well so some porting is very possible.

Those turbos are quite expensive but not as much as its garrett equivalent.

[Spartacus]

What Garrett turbo would you compare it to? And what is the performance like of the evo turbo like compared to it?

Just looking at different turbo set ups as opposed to using the usual KO3S/KO4 turbo, it's not for a RWD but a 1.8t Corrado