[jfish360]

My friend was talking about having to go to a machine shop or something about getting the pistons attached to the rods. They have to heat something up and hammer the pin throught. I was wondering what he might be talking about he only messes with v8's and stuff so maybe it doesnt apply to my rebuild of the b16.

 

[Tiersin]

Nope, actually, I'm on my way to get this done next week. The pin connecting the piston to the rod is stuck in there really tight. In fact, friction is the only thing holding it in. You really need a press to get it out.

They have to heat up the top of the rod, that expands the metal enough for the pin to get through with a bit of force, and then when it cools(even operating temp) its pretty much imposable for it to come loose. I guess it guarantees it not coming apart while the engine is operating, because that would be very bad.

 

[downest]

... but if they are already attached (you are tearing it down yourself), you don't need to separate them, and you don't need to press new pins in. Put new rings on the pistons and hone the cylinders, you'll be all set.

 

[jfish360]

forged pistons and rods..... only other thing to worry about is the sleeves, im going b16 turbo. Do you guys suggest i get new bearings while im at it.

 

[downest]

Take the pistons and rods to a shop that can press the wrist pins in.

You definitely want new bearings too, I would get some ARP rod bolts and head studs as well.

 

[CRXBart]

You definitely want new bearings too, I would get some ARP rod bolts and head studs as well.

Yeah what he said. Depending on boost level I would do sleeves too. If your building the rest might as well. For your wrist pin what I did, was put the rods in the oven to 200 deg. and put the wrist pins in the freezer. They will drop right in, and when the temp neutralizes they will be in there for good. Use a welding glove to handle the hot rod.

 

[ludesrv]

You definitely want new bearings too, I would get some ARP rod bolts and head studs as well.

Yeah what he said. Depending on boost level I would do sleeves too. If your building the rest might as well. For your wrist pin what I did, was put the rods in the oven to 200 deg. and put the wrist pins in the freezer. They will drop right in, and when the temp neutralizes they will be in there for good. Use a welding glove to handle the hot rod.

Wow good trick Bart!

 

[jfish360]

Nice idea.

I really dont think sleeves are for me i was considering getting them but there to much money for me and there not needed with the horsepower goal of 350. And if they are needed at 350, all i can say is trail and error, ill find out.

 

[ludesrv]

Nice idea.

I really dont think sleeves are for me i was considering getting them but there to much money for me and there not needed with the horsepower goal of 350. And if they are needed at 350, all i can say is trail and error, ill find out.

We ran 400whp on a B16 and the only thing replaced where the pistons and rings. The block was honed and headstuds where used. Stock rods and rod bolts. Stock B16 basically. Had 13 lbs of boost on it and loved every second of it. It was stuffed into a 94 EG coupe, ran a 12.2 on the 1/4 mile.

 

[jfish360]

well ill be safe then sorry since this is going to be my dd.

Okay i found some pistons around town check them out i no there not low compressions 10.1 http://www.vadriven.com/forums/showthread.php?t=168471

Have you guys hear anything about Srp that would want me not to get them? also it says "Valve pockets machined to accept oversized valves" so that mean i have to have oversized valves or no?

Holy crap 12.2 dang my crx is going to be hella fast. Dude ill have one of the fastest cars in town sweetness..

Ohh by the way working on engines is hella fun. I just took apart almost the whole thing and its pretty much common sense stuff, i havent taken apart the head cause i dont no if i will but thats the only part that looks a wee bit hard.

 

[CRXBart]

Yeah I can't take credit for the wrist pin trick my machinist told me about it. It does work great though.

I hope you know you are gonna need slicks to run that fast. My friend has a 400 whp 2000 Si, and it runs 15's on street tires. He isn't the best driver either. Turbo cars are harder to drive too it seems. If it is your DD I would sleeve it.

 

[ludesrv]

Yeah I can't take credit for the wrist pin trick my machinist told me about it. It does work great though.

I hope you know you are gonna need slicks to run that fast. My friend has a 400 whp 2000 Si, and it runs 15's on street tires. He isn't the best driver either. Turbo cars are harder to drive too it seems. If it is your DD I would sleeve it.

Maybe not sleeve, but I would block guard/hone it. Good enough for regular to moderate boost. I wouldn't throw over 20psi without a sleeve tho, just for good measure especially on a DD.

Vid of the 400whp B16 car, before the 718whp GSR went in (Bart saw the GSR run, not the B16):

http://guelphracing.nstemp.com/importso ... unfire.wmv

And my mistake, 12.0 is what it ran on slicks, 12.2 was on street tires, not recorded at a different track.

 

[jfish360]

i was going to get it honed but i was wondering how much they actually take out, like with the stock 81mm pistons work or do i need a diffrent size?

wow does anyone wanna send me on the right direction for block guards, i check ebay and something was wrong there only like 80 dollars, thats by far the cheapest thing im having to buy for my project.

also are srp pistons reliable?

 

[ZeniceguyCRX]

get a thicker head gasket to lower the C.R. a bit.

 

[rex2nr]

You can get the block honed without material being removed. Honing just cuts the crosshatch lines back into the cylinder walls. You may need larger rings if the walls are damaged, because then the shop will need to over bore the engine.

 

[toxiclows]

Honing a block is done to get the crosshatch necessary to get the new rings to seat or break in. .. . it has nothing do do with making the cyl walls larger. you are thinking of boring. where they are actually taking thousanths of an inch off the walls to clean up scratches or gouges. . . . and then a hone would be sone to the bored cylinder to achieve the same crosshatch. . .

i have heard of that trick with the wristpins. i just took mine to the machine shop to get pressed. . . but what the heck next set of rods that i hand. . . i will give that a shot. . I have some old ones in the garage i might try that with . .. and see how smooth it goes. . .

chris

 

[jfish360]

i just bought some srp pistons and got the rings, but was i supposed to get the pin that goes throught with it or do i get that when i buy rods? where would i buy the pin at if i had 2?

 

[Dren]

I wouldn't count on a turbo engine lasting for too long if you don't sleeve it. You'll get thousands of miles on it if it is tuned properly but it won't have that Honda reliability.