CA18 T25 to SR20 T25g(how to:write-up)

Discuss topics related to the CA18DE and CA18DET series engines.
sr20detconv
Posts: 40
Joined: Tue Jan 23, 2007 1:26 pm
Car: 1989 silvia k's

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I'm pretty newb to this forum but I though I could do a write for a T25g turbo swap. I see alot of people asking this question. I don't really know but I guess it is the same for the t28.

Before doing anything,make sure you have everything on your Hand. The extra part I did use while doing this was:CA18DE(pulsar) exhaust manifold to head gasket(x4),300zx manifold to turbo gasket.I didn't use a new turbo to downpipe gasket because mine was in good condition. I heard that some use the Mazdaspeed 2003.5 gasket.

Their is no special tool,except a BIG snapring plier.



Removing the stock turbo is straigh forward.Take off the hoses,connector(maf and 02),exhaust ,oil and water lines(dont loose the water line gasket ).I took it out with the manifold without the O2 pipe.Take of the 4 bolt holding the turbo to the manifold.



Now you can see both of them side by side. The SR20 unit is visualy bigger.



Before putting back your new sr t25 you need to do a few things.First of all you would want to use the CA18DET pipe.

After that,you would need to put a new vacuum source for the wastegate. I tapped the ca18 vaccuum bolt onto the sr unit. I don't remember the size of the tap.I'm sure you can use another vacuum but,the closer to the turbo the better.It will not read the pressure drop(Correct me on that).

Now you would want to put the turbo back on the manifold. It will NOT fit.



You need to rotate the compressor side by taking off the snapring and forcing the compressor to twist a little bit.

Use nissan OEM gasket if you can.



You would want to use the sr20 pipe just after the suction pipe and cut it off to make it fit to your suction pipe. I don't have a pic unfortunatly.

After that it is the same thing as the installation but in the opposite way.Don't forget to connect everything.



Your car will LOOK stock if everything went well.

Sorry for my bad english.If their is anything I forgot,please mention it.



ca20det
Posts: 209
Joined: Thu Mar 30, 2006 12:34 pm
Car: 89 240sx 93 sentra

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beau write up man j'ai hate de faire pareil (cet été surement) oublie pas notre ride et photoshoot

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Jiggyfry
Posts: 2775
Joined: Fri Sep 23, 2005 8:34 am

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Hey guys, if you ever do a meet, lemme know, in 5 mins outside of Montreal!

sr20detconv
Posts: 40
Joined: Tue Jan 23, 2007 1:26 pm
Car: 1989 silvia k's

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ca20det wrote:beau write up man j'ai hate de faire pareil (cet été surement) oublie pas notre ride et photoshoot
MerciCes certain!Faudrait juste que je poses toute mes pieces moi aussi...

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c-rad
Posts: 2584
Joined: Sun Sep 19, 2004 5:10 pm
Car: 1991 Nissan 240SX w/CA18DET
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Je m'appelle Christophe. Il fait beau temps. Quelle heure est il? J'habite a les etats unis Ou es la salle de ban? Puis je bois de l'eau? Ca va? wOOt!

ser20det
Posts: 143
Joined: Fri Dec 08, 2006 8:22 pm
Car: Silvia K's 88

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sr20detconv

Youpi ! je commence a voir que je suis pas le seul a s'intéressé au ca18 !

c-rad, You will need working your french a little bit but your not bad at all :P

ca20det
Posts: 209
Joined: Thu Mar 30, 2006 12:34 pm
Car: 89 240sx 93 sentra

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lol yeah where supposed to be the frenchies but we actually speak they're language better than they speak ours no offense!!!man c quoi qui te reste à installer tas juste a descendre avec ca chez nous pis on t'installe ca! (on incluant la personne qui parle )

en passant.. ca fait tu une pas pire différence? t encore sur le boost stock et tout stock? injecteurs maf etc?

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eds13
Posts: 5924
Joined: Mon Nov 01, 2004 9:27 am
Car: 89 240sx Hatch, 07 Armada LE, 06 M35x, 97 C35 Laurel, 94 JDM Q45
Location: Central VA

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you people need to get a life

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redtop91
Posts: 16326
Joined: Thu Sep 07, 2006 9:05 am
Car: ↑ ↑ ↓ ↓ ← → ← → B A Start

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eds13 wrote:you people need to get a life
Indeed.

asher4857
Posts: 824
Joined: Thu Apr 29, 2004 2:13 am
Car: '89 240SX Fastback

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great write up, ill be doing it this week so that is really great timing

ca20det
Posts: 209
Joined: Thu Mar 30, 2006 12:34 pm
Car: 89 240sx 93 sentra

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and whats that about?

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float_6969
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Posts: 19853
Joined: Mon Aug 26, 2002 1:55 pm
Car: CA18DET swapped 1995 Nissan 240sx (too many mods to list)
2015 SV Leaf w/QC & Bose (daily)
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It's special Ed, just nod and smile....

dsc4130

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eds13 wrote:you people need to get a life
ill third that one

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Jiggyfry
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Mmmmm, Poutine!


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