I bought this short block http://hondamarketplace.com/showthread.php?t=2636182 and installed it using every thing from my old set up that had a cracked sleeve. the head was gone over at my machine shop so i dont think its in the head, but who knows, i was told the motor had only 5k miles on it, it sounds just like a vitara SOHC motor and never stops with the blow by out the breathers. here is a video to show the sounds it makes, i have driven it about 30 miles so far and it runs fine, just sounds like a power stroke diesel. i have gone over the valves 3 times and they are set to 6 intake and 7 ex .
http://www.youtube.com/watch?v=9o-k0iWJtB4

 

You used the bottom end all assembled?

Or did you swap in some of your parts?

Either way sounds like the Piston to Wall cleanance is on the looser side...

Is that video with the engine warm? does it get quiter when it is warmed up over cold start?

Eitherway if it's running alright I wouldn't worry too much... do a leakdown test and a compression test...

 

i left the bottom alone all i swapped was my oil pump since i knew it was new. its warm in the video fan cycled half a dozen times, it is a little louder when cold but it dont get much more quiet once warm. i will do a compression test in a few minutes. it smokes under acceleration for sure, i just went for a 10 mile cruise and every time i get in it and load it i see smoke out the back of the car, i was told loose PTW alone can cause this even if teh rings are ok. im watching the oil consumption i had to add a half quart in 30 miles, but i only stuck 4 in originally and i think a GSR is 4.5 any way.

 

ok comp test cyl one 170 cyl 2 145 cyl 3 148 and cyl 4 165 looks like the rings are loose to.

 

Is it strictly blow by or is there any oil/coolant mixing? It may be a HG cracked between cylinders 2 and 3 to cause the lower compression. 1 and 4 look good are a close to each other.

 

well the middle 2 def. don't look too hot.. depending on what the compression of the pistons, 1 and 4 might be ok...

Loose PTW clearance can be ok and really just translate into increased oil consumption and a little more blowby than you'd like... but it's not the end of the world... those middle 2 though def. look like they're the problems.

I'd try to do a leakdown test but chances are you'll have a decent amount of leakage in the middle 2 cylinders.

If it's just a case of sloppy tolerances then it's not the end of the world... on a sleeved block with forged pistons it probobly won't matter until you try to throw gobs of HP at it... even then the heat might make the pistons expand a bit and not leak as bad.

But if you're a perfectionist I'd tear it down to re-ring it and check out the cylinders, and make sure the pistons are the right size in there... if it's P2W clearance and not rings you'll need new pistons to fix it... So don't tear it apart if you're not willing to do pistons...

If the rings on 2 and 3 are the problem then you might be able to get away with a re-ring.

Also you should check with the original seller... could be it ran like that fine for a long time with no problems.

Good Luck.

 

the head gasket is brand new , i used my head from my old set up, there is no coolant mixing of pushing , im guessing its the loose PTW thats the issue, i just drained out a quart and added a quart of lucas oil treatment, i will drive it a bit and recheck the compression numbers to see if its the same.

 

ok after the lucas and a 30 mile drive the new numbers are

1 175
2 147
3 150
4 175

not sure if its the lucas or if they are just sealing better from being hotter, no chance they are just seating better since they have allot of miles on them already.

 

i just checked the oil and it used a 1/16th of a quart on the last 30 miles.

 

how about the coolant?

From here you really need to do a cylinder leak down test. I dont know how you came up with 1/16th of a qt using the dip stick but anyhow you should do a leak down test.

Do that and report back.

 

coolant is good, dont use any or push any and runs nice and cool. i will do a leak down test on tuesday when i go to the dyno to get it tuned.

 

x2

OP your going to tune the car sounding like that?

 

i dont have much choice, there are 6 races left in the season and i bought this short block under the impression it was fine now im to broke to start over. i am going to try and sell or trade some stuff so i can get a set of 84.5 pistons and then maybe i can yank it quick and freshen it.

 

sounds like the pistons are beat up and rattling around in the bore....i bet if you remove the pistons you will find the skirts scuffed to rat **** and the cylinder walls are probably scored up a bit too....

it will probably hold togeather alright even if you beat on it but you gotta keep on watching the oil consumption.

 

Try to find pics of the last guy's engine bay. I'd be willing to guess he ran it w/o a filter in a dusty area, and probably waited a few thousand miles to get it tuned. Sounds like the pistons are very loose, and looks like the rings don't seal for ****. Unfortunately, just because it has BENSONS on the block doesn't mean a pro built it. They could have only sleeved it.

BTW if you look at the pictures in his FS thread, the head looks like it had a major oil issue. The rocker pads look torched... So I'd check your bearings too, he may have had oil starvation issues.

 

the guy i bought it from never ran it, he bought it from this guy https://honda-tech.com/forums/members/earldasquirrel-999322046/ and deferred me to him for questions, that guy told me it didnt smoke, use oil or make any sounds, it does all of that and massive amounts.

this is the guys original thread http://hondamarketplace.com/showthread.php?t=2616744

 

does any one have any 84.5 pistons for sale or trade? i started a wtt thread but no luck. b18 of course.

 

update, any way i got 250 miles on it so far and while its smoking bad and noisy it seems to hold together, i will get it tuned tuesday and see what power it can make and run it out for the last few races left in the season. if any one has 84.5 mm pistons let me know.

 

Uh you could risk the block or the rest of your parts by pushing a motor you KNOW has issues... if I were you I'd punch out the sleeves now and get new pistons/rings/bearings.

 

i had a sligt same issue with my b20/vtec stock sleave. Cracked the sleave in all 4 cylinder had smoke from the oil cap and breather tank. The tank would overfill in under 3 laps and thats with a return line. The noise could be from a bad LMA that collapse.
I do have used 85mm piston for sale

 

you think its a LMA that collapse? 85 would mean i had no rebuild left so im going with 84.5. how would i check if its a LMA?

 

IIRC he had a problem with the motor making low power and vtec not working. Sounds like an oiling issue to me!

 

ok i pulled the vc and pushed each LMA in a few times and they always pop right back out,

pgpbubble who was that guy you speak of? cause the guy i bought it from never ran it and the guy he bought it from wasnt the guy who built/dynoed it either, however brian said when he took the head apart there was no O ring between the cap and head so i figured that was the vtec issue. i used my oil pump and also converted the block to the non oil cooler set up, the oil cooler was all jb welded like it was leaky and the motor was covered in oil. any way it has good oil pressure and vtec works perfect. its just noisy as crap and burns oil.

 

It was making low power because he was using Sk2 Turbo Cams when he thought they were Tuner1's, according to what he told me.

 

Ah i see, no problems there then. Wonder what the clearances are on the motor then..