engine 4g63 N/T to T

[dsmluver98]

ok so i just bought a N/T 4g63 block and i was told by slow-boy racing that i can use this as a turbo block but i need turbo pistons. but i already have those.. my question is the crank that came with the block is most likely N/T crank but he also said i could use that. question is what bearings do i use for the main and rods and also rear main seal??
thanks for your help

 

[dented_coffee]

The only differance in the NT and turbo block is that piston heads and the turbo block has oil squirters that help cool the pistons. The cranks are all the same as well as the bearings and rear seal. The NT head has a plug in the holt where the oil feed for the turbo is at. Even the head is the same. The oil pressure migh be higher in the NT block due to lack of oil squirters and causing the engine to run hotter. Get an external oil cooler from a 1990 and you should be set for a stock turboed daily driver with the reliability of a factory turboed DSM.

 

[dsmluver98]

ok so i will order all turbo bearings for rods and mains then?? and also how bout the knock sensor i dont see the hole for that on this block?

 

[TSI_AWD_FTW]

Im not to sure to where the know sensor is located but I would be carefull, the N/T blocks have a much higher compression ratio, so you wouldnt be able to run high amounts of boost before you acually start building the block

 

[92EagleAWD]

Im not to sure to where the know sensor is located but I would be carefull, the N/T blocks have a much higher compression ratio, so you wouldnt be able to run high amounts of boost before you acually start building the block

Hes using turbo pistons, Comp ratio should be same as turbo 4g.

 

[akira235]

Im not to sure to where the know sensor is located but I would be carefull, the N/T blocks have a much higher compression ratio, so you wouldnt be able to run high amounts of boost before you acually start building the block

please don't post incorrect information. the n/t BLOCKS do not have higher compression, the rod/piston combo in an n/t engine creates the higher compression ratio. the blocks are identical except for the knock sensor and oil squirters.

 

[dsmluver98]

ok i know about the block and like 92eagle said I'm using turbo parts. I'm not trying to sound like a smart ass but I'm not a newbie i do know some of my things... so to get back to this post does anyone know were the knock sensor is going to go.. and do i use turbo bearings

 

[92AWDHX40]

Back of the block get one and see where, or look at one. Use the ones for the engine you have, i would just get a turbo block, i was going that route once but. Too much involved. You need to do some looking lots of thread on here about that.

 

[tripph90]

what turbo r u thinking of going with

 

[19Eclipse90]

ok i know about the block and like 92eagle said I'm using turbo parts. I'm not trying to sound like a smart ass but I'm not a newbie i do know some of my things... so to get back to this post does anyone know were the knock sensor is going to go.. and do i use turbo bearings

Your question on the bearings has already been answered by dented_coffee; the main and rod bearings are the same for turbo and non-turbo 2.0L engines:

The only differance in the NT and turbo block is that piston heads and the turbo block has oil squirters that help cool the pistons. The cranks are all the same as well as the bearings and rear seal.

Below is a picture of the back side of a turbo engine clearly showing the position of the knock sensor. Their should be a boss (or flat surface) on your engine block at that location. It may or may not have a hole in place already and if it does, it may or may not be threaded; all the posts I could dig up on this issue provided conflicting information. At most, you will need to drill and tap a hole for the sensor in that location.

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[dented_coffee]

My 1993 Eclipse GS 2.0L non turbo had a knock sensor screwed into the back of the block.

*To the OP*
Take all your turbo parts and put them into the NT block. You will be just fine. If you have the NT block for a good reason but wanna use it for a turbo build then your ok to do so. Just watch all your temps and at any sign of over heating just let it cool down for a little bit. You should have no problem at all thow unless your beating the piss out of it at high levels of boost. Get an external oil cooler to help cool the oil and get a better aluminum radiator and make sure the shrouds are there to cool better.

Now for the IF YOU HAVE THE BLOCK FOR A GOOD REASON part. For ease of mind on the squirters difference in the blocks you can have it turned into a turbo block very easy for not that much. Here is the link for it > DSM Graveyard - Your #1 Source for DSM Parts!. I personally have seen work done at DSM Graveyard and they do some extremely great work. I know I have a almost brand spanking new STD bore 6-bolt non turbo block with less than 30k origional miles on it all greased and wraped in storage for when I need it. I will be getting the oil squirters tapped for it when I'm ready to use it.

 

[dsmluver98]

dented coffee im confused on the good reason part.. what is wrong with the reason that i have the block?? but to tripph90 im using a evo 16g ... and thanks for the info on the knock sensor. and for some reason i am already set up with a oil cooler.. i found it quite weird but hey im not gonna complain..

 

[dented_coffee]

dented coffee im confused on the good reason part.. what is wrong with the reason that i have the block?? but to tripph90 im using a evo 16g ... and thanks for the info on the knock sensor. and for some reason i am already set up with a oil cooler.. i found it quite weird but hey im not gonna complain..

. What I was meaning by GOOD REASON is that what if you have a freshly worked block ready for the build, or you have one thats in perfect spec of with a standard bore like I have. Why throw away or sell somethng thats perfect and ready to build off of.

Sorry for the confusion on that. I should have been more specific instead of worrying about boring the crap out of you with an extremely long post.

 

[thomcasey]

Ran a 92 N/T motor with a turbo for 1.5 years. Never had a temperature or oil issue. Spend several long traffic trips where I was stuck in stop-n-go traffic, in the summer, for several hours plus the trip back and forth from Indy to Norwalk and two to Kentucky. Never had a temperature issue at all. And this is a complete N/T motor, straight out of a 92 GS with 145k miles on it!! No knock sensor, no squirter's, non-turbo pistons, no oil cooler what-so-ever. Only issue I ever had was the balance-shaft belt breaking @ 15k miles when it was 5 degree's outside in December 2010, causing the timing to jump 3 teeth.

Oil squirter's are overrated. Don't worry about them. Put in the turbo parts and install the knock sensor and enjoy.

 

[dsmluver98]

your not boring me..... i love my car and want to know anything and everything possible.. so if it takes me years to read and learn about my car i will and actually am.. so that's not the case. and the block that i just took everything out of is scored really bad.. that's the Turbo block. the N/T isn't machined yet or hot tanked.. im gonna hopefully do that this week and im just waiting on the parts and then this build is on its way

 

[dented_coffee]

your not boring me..... i love my car and want to know anything and everything possible.. so if it takes me years to read and learn about my car i will and actually am.. so that's not the case. and the block that i just took everything out of is scored really bad.. that's the Turbo block. the N/T isn't machined yet or hot tanked.. im gonna hopefully do that this week and im just waiting on the parts and then this build is on its way

Sounds good. We all got to learn and start some where . To be safe I would keep that external oil cooler. Higher compression on boost means more heat. Hot motor oil isn't really good to have. So your external oil cooler is a blessing to help aid the hotter oil to cool it down better . Also did you happen to look at DSM Graveyards dilling/tapping oil squrter ports on a NT block? Just remember that it's always an option if in doubt of not having them .

To post #14
Aside from the NT pistons being weak for boost. If you were running stock boost levels your AFR was throw off a bit I'm sure. Did you use bigger injectors and something to tune it for that substantial increase of compression? I'm just curious on that because my friend fried the NT pistons from a horrible AFR running stock boost on 450cc's .