Nissan Safari TD42 Twin Turbo

By Bobby - Posted on 06 September 2009

Engine BayAfter owning my trusty Safari for 7 years,putting up with a lack of power towing i decided it was time to get around to doing a turbo conversion. Many hours had been spent surfing Off Road Experss and the like and i had decided to add a CT26 turbo off a Toyota Landcruiser. I dropped in to see Chris at Turbo Diesel and Automotive in Hamilton as i had heard he was a bit of a master at pump set up. This is when things changed............... Chris had been working on and developing a twin turbo set up for his own TD42. He had done some homework and had come up with a pair of IHI ball bearing turbos that would cover all the areas people wanted their TD42's to perform. I was sold. My next job was to organise some manifolds. I had considered making my own but i dropped into see Mike at Sinco Customs in Hamilton and once i had seen his work i decided that it was not worth the hassle of trying to do this my self,and there prices were reasinable.Sinco specialise in custom inlet and exhaust manifolds,performance exhausts,rollcages fuel tanks etc.Check out there website www.sincocustoms.co.nz Once Mike had made the manifolds and downpipes i dropped them off to CCS in Taupo to have them coated to try to keep the tempratures down. The manifolds are made out of steam pipe bends so there should be no chance of cracking. Once the manifolds were ready i took everything off that was no longer needed and fitted the new manifolds,turbos and down pipes. Next step was to plumb everything up. For the front turbo i tapped into the vacume pump oil feed and for the rear turbo i used the spare oil feed behind the left hand engine mount.Because these are ballbearing turbos i put reducers in the oil feed lines. For the returnes i welded two -10 fittings into the side of the sump. For the water cooling on the turbos i drilled and tapped the thermostat housing and for the other end i used the blanked of fitting into the water gallery at the rear left hand side of the block. It's back to Sinco Custom to get the turbo downpipes connected to a costom 3 inch exhaust. The front mount intercooler piping made up and the pipe work fabricated to connect the K&N air filter to the two turbos. Mike also fabricated a new radiator overflow bottle and breather tank. I know a front mount intercooler is not ideal for all you off road chaps but this is my tow wagon and every day drive car so the most off road it gets is when i park it on the front lawn. I believe that a good water to air set up would be most effictive this was a cost efficent set up for me. The intercooler is 600x300x80 in size. I have kept the air con so the intercooler would not fit behing the grill. I also had to notch a little out of the ends of the front rails and bumper to squeeze it in. I only got this running yesterday and still need to get back up to Turbo Diesel and Automotive to have the pump and injectors modified to suit. I have given the fuel screw a wind in one turn. At the moment it is starting to boost just below 1500 rpm and is boosting to 10 psi.There is no sign of smoke whatsoever. Driving from Hamiltom to Taupo today the highest EGT i had seen was 450c. I am heading to national park tomorrow so will see how things go up some of the bigger hills. The engine temp has not changed. Some of the hills on the way to Taupo (Tar Hill)where in the past the auto would kick down a couple of gears foot to the floor lots of black smoke 80-90 kph have been transformed to crusing up hardly touching the throttle 110 kph only boosting around 5 psi.The auto did not even change down.....Luxuary. I will keep you updated once i get the pump and injectors done etc......Just need to save up some more $$ I have got the truck back from having the pump done at Diesel Turbo & Automotive. They took my origional pump and a pump i had off a Terrano TD27 Turbo. They built up one pump up out of the two. They use the 11mm plunger out of the Terrano pump as the origional pump was only 10mm and swapped the diaphram assembly over that compensates for boost by adding extra fuel. The truck is now going hard. I have left the boost at 10lbs, origionally i decided on this as i did not want to spread the auto tranz over the road but once Chris had spent a few hours on the test bench with the pump, his thoughts were confirmed that using this pump set up he would only be able to supply a good safe fuel delivery for 10lbs boost.He even had to sneak some landcruiser parts into it to get the delivery it's got now. If i ever want to run more boost i will need to go the next step on the pump and get it converted to a Landcriuser pump head and 13mm plunger. Any how the performance is great. It pulls hard from nothing right through to 4000rpm(where the auto changes). No lag or flat spots and all that nasty black smoke has gone or been turned into power. Next step is to check over all the rockers and rocker shafts etc to make sure there is no wear and get it on the dyno to see what sort of power we have got. I will keep you posted.
All the bits i had collected up to do the conversion.
Turbo down pipes.
Intercooler in place and plumbed up.
Oil returnesIntercooler piping.
 

User login

Copyright © 2009 OffroadExpress. Site design and build by EzySolutions Ltd, www.ezysolutions.co.nz