Non turbo 6 bolt for Turbo

[BrokenTsi]

Well, I ordered a 6 bolt block from Kar King. It has 1st gen big rods on stock pistons. Its basically a stock turbo 4g63. Kar King told me they remove oil squirters on every engine build to simplify the engine. This isn't a thread about oil squirters, I'm OK not having them because in my old motor, a few of them failed and broke off anyways. I'll use the extra oil pressure.

Anyways, it turns out the block was actually a NON turbo block. I found this out because there was no place to put the knock sensor. So........"removing the oil squirters" actually means putting turbo internals on a NON turbo block.


Now I have nowhere to put my knock sensor. There is a hole there for it, but it has no threads and the hole isn't deep enough to tap it and have the whole knock sensor thread in. Kar King told me to relocate it. I thought the factory ecu was calibrated for the knock sensor for that specific spot it was designed for.

My question is.........Can I drill/tap where the hole is further than the casting allows? If I did, am I coming close to the cylinder walls? and if I relocate it, will it still read like it should?

 

[Mike000]

I would ask for a refund, they screwed you. I am not sure were you could tap the knock sensor.

 

[BrokenTsi]

there are a few places that are empty that have threads, its close to the stock position but.............

Some guys have told me that I can relocate to the threaded hole right behind the no. 3 cylinder and it will be fine, I'm just anal about it, so I want to make sure.

 

[half-cocked]

Why isnt the hole deep enough to tap and have a knock sensor thread in?

 

[BrokenTsi]

the casting on a turbo block is about 1/4 inch thicker where the knock sensor is. Its perfect for having threads in it. The casting in a non turbo block is about a 1/4 inch shorter, thus making it a 1/4 inch too short. The hole is very shallow. I'm not sure if I can drill into it further. I dont want to drill thru a cylinder wall. If someone has done this with no problems then I have no problem tap/drilling it.

My motor is already completely assembled with my new head, head studs, 50 trim, hks cams, timing belt, water pump etc. I dont want to have to take them all apart again.

 

[GalantGst]

i was told the na block had a hole for the knock sensor.

funny thing i si have a fwd na galant that i slapped a turbo on when i went to hook up the knock sensor i found out it was already there and this def was a na car.

 

[BrokenTsi]

i was told the na block had a hole for the knock sensor.

funny thing i si have a fwd na galant that i slapped a turbo on when i went to hook up the knock sensor i found out it was already there and this def was a na car.

hmm, not sure on that one. I guess there are some case where there is a spot for a knock sensor, and some blocks had no provisions for a knock sensor. just gotta make sure you get the right block i guess.

I'm just waiting for someone to read this thread that had experience with tapping for a knock sensor. (sigh)

 

[4GSixty3]

Right near cylinder #3 is where the knock sensor goes...there is a hole there and mine threaded right in. Try threading it in and see what happens. I bet it goes in all the way .

 

[BrokenTsi]

yeah, is that the hole thats located higher up on the block? There is a threaded hole there and the knock sensor fits fine. This hole is directly behind no.3 instead of being inbetween 2 and 3 like where it should be.

 

[biglady112]

Yep. It sits behind the #2 cylinder. We have a non turbo block in the race car. Fits just fine. Oh yea. How does a T-76 + 150hp shot sound to you.

They are identical. Every motor I have used either had the oil squiters blocked, or just started with a N/A block.

Steve

 

[BrokenTsi]

yeah, i dont doubt they are identical, i'm perfectly fine using an N/A block without squirters.....

Behind #2 cylinder? I didn't see anything there, but only behind #3 cylinder located higher on the block. I'll take pics when I get back from NC.

 

[bastarddsm]

just weld a nut on the back side of the hole you have.

 

[half-cocked]

EEhh, welding a nut on cast iron might not be the best idea if you want it to hold.

 

[dsmboykin]

When you say 1 g big rods and stock pistons what exactlly do you mean??

 

[biglady112]

Not sure what he meant, but the our non turbo block had 1G big rods and what looked like 2G pistons. They were different of course. Only slightly higher on the dome. It could have been the number three. Haven't looked at the motor in a few weeks. Both a 1G and 2G knock sensor fit very well in our block.

Steve

 

[BrokenTsi]

from the factory, 90's had "Big Rods". They are rods that are a little bigger than othe 6 or 7 bolt rods. They say they are good for up to 450whp. Stock pistons are stock pistons, 7.8:1 compression.

I know it fits, but if you are using it then it must work pretty good there also. As long as it works like it should, im cool with it.

 

[4GSixty3]

I was aware all 1g's had "big rods".

 

[BrokenTsi]

i always thought it was the 90 6 bolt blocks. :shrugs:

 

[RamenPride]

90-91 = "big rods," 6-bolt motor