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Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by GEN2 LS
Yeah I'm going to send it off to Pure Tuning and have them inspect and replace what's needed.
I'll try to break it down super simple...
I had two integras one USDM GS-R and one JDM ITR.
Last year the USDM DC2 had the following
Sleeved Golden Eagle Block w/ Pure Tuning Built Head
The JDM ITR has a stock ITR motor in it during this time.
USDM car was boosted at the time and blew up. Cracked a ringland in cylinder #3 (Pictures I posted earlier of the screwed up piston) that's from the Golden Eagle motor.
Once this motor blew I parted ways with that car but the Pure Tuning cylinder head looked fine so I kept it. No visual damage on the head so I didn't bother sending it off to get checked.
Fast forward to this year. I pull the stock ITR motor from my JDM ITR and sent a spare B18C1 block I had off to RameyRacing to get built. They send me back an assembled shortblock and I throw it in the ITR. Wanting to keep my stock ITR longblock I figure why not throw my old Pure Tuning head on this new RameyRacing built motor.
After throwing the head on did a 500 mile break in for the clutch and motor and took it to get tuned with my GoAutoworks turbo kit on. Remember I never got the head inspected from when it came off the old Golden Eagle motor so I hit the dyno and not even 1hr into tuning and doing pulls we lose part of the exhaust valve not even turning any crazy rpms still on low boost and no timing on E85. The valve issue happened on the same cylinder that blew on the other motor.
hope that helps clear things up😂
Hmm... i should prolly consider them inspecting my head aswell.
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by Stopsign32v
So shortblock isn't hurt (assuming)
But head is missing a chunk of valve? Why?
Do you think the valve got cracked on the last go round with the old motor?
Correct I'm assuming the shortblock is good judging by the cylinder walls and piston having zero marks on them. Even my tuner said "I'd send it honestly" lucky for me he hadn't even started pushing the car yet so when it happen it was at low rpms sorta and very little boost/timing.
Yeah I'm assuming the valve could have had micro cracks or something from the events with the old motor.
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Just caught up on the last few pages. @GEN2 LS here is my two cents.
The block looks great, but while you have the head off I'd pull the problem piston out and inspect it and verify the rings are set and gapped correctly yourself - it's easy to do. You can reuse the same bearings, just be careful to keep everything clean. And obviously, you'll need to get the head inspected and fixed. I'd also have the fuel injectors checked, perhaps one is off and you damaged a valve from heat which caused a guide to fail letting oil into the combustion chamber.
Something happened to cause the damage, you don't want a repeat.
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Torco oils had pretty quick shipping. And.... i have my 84mm b16 shortblock for sale for stupid cheap here soon lol. It will need to be bored out to 84.25mm or 84.5mm
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by ls joker
Torco oils had pretty quick shipping. And.... i have my 84mm b16 shortblock for sale for stupid cheap here soon lol. It will need to be bored out to 84.25mm or 84.5mm
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by Pepe14
Whats the story with that??
84mm b16 that is currently still bolted to the car. Cylinder walls got fucked from setting after like 6 month. Were rusted, scored, ring wear marks. Pistons are pitted with lead deposits all over them. They looked as bad as the spark plug. Pretty resembled weld splatter. 84mm golden eagle sleeves, eagle h beams, and b16 crank should still be usable. Sleeves will need to be cleaned up obviously
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by ls joker
84mm b16 that is currently still bolted to the car. Cylinder walls got fucked from setting after like 6 month. Were rusted, scored, ring wear marks. Pistons are pitted with lead deposits all over them. They looked as bad as the spark plug. Pretty resembled weld splatter. 84mm golden eagle sleeves, eagle h beams, and b16 crank should still be usable. Sleeves will need to be cleaned up obviously
Yea i saw that post but are you giving up? Going with another block?
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by ls joker
Not giving up, goin with an 84mm gsr block, same compression from ramey built. Itll make it easier to hit my goal with the added stroke.
What compression was your old b16 block? Having had both b16 and my current b18c blocks, the b18c blocks are a nice upgrade. That pump in displacement and stroke really helps midrange power. 84mm b18c is the play!
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Pistons were 10.8 domed traum pistons. Combustion chamber on the b16 head opened up to 84mm aswell.
I told ramey i wanted to go with 10.8 again If it wasnt custom. If it would be a custom piston again, to go with 10.7 comp pistons. So upcoming here soon will be a 84mm b18c with 10.7 or 10.8 compression
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by liam821
Just caught up on the last few pages. @GEN2 LS here is my two cents.
The block looks great, but while you have the head off I'd pull the problem piston out and inspect it and verify the rings are set and gapped correctly yourself - it's easy to do. You can reuse the same bearings, just be careful to keep everything clean. And obviously, you'll need to get the head inspected and fixed. I'd also have the fuel injectors checked, perhaps one is off and you damaged a valve from heat which caused a guide to fail letting oil into the combustion chamber.
Something happened to cause the damage, you don't want a repeat.
I'm not going to check the block other than pulling the oil pan off and checking from there. The cylinder walls look fine and whatever material from the valve that got destroyed got spit outta the exhaust i'm sure. My old built block was the bottom end that had issues. I just recently had the head inspected and got bad news but I want a second opinion from a honda cylinder head specialist vs a local machine shop. No shade throw at the local shop either. Yeah i'm def gonna send the fuel injectors out to get checked for flow as well.
Originally Posted by Pepe14
Chucked a rod bearing last weekend. My fault for using cheap oil. Its getting hard and to find racing oil locally
What oil are you using? Have you tried Brad Penn 20w-50?
Originally Posted by liam821
Oh no, that sucks @Pepe14 . B-series blocks are getting harder to find. I've been hoarding them and will grab'em when one pops up on FBM for cheap.
K series is looking better everyday sometimes I swear.
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Tried getting in touch with Pure Tuning called and emailed and they never get back with me even after stating they would via phone.
So I had a local machine shop check the cylinder head.
Their biggest concerns were the following
- Inconsistent reshaping of the combustion chamber/bowl area
- Valve guides cut with too much material removed
- Seat damage on the exhaust seat where the valve broke apart
Machine shop said i'd be better off with a new head versus sinking so much money into fixing this. I want a second and third opinion from builders like 4piston, BZE etc. Not discredting the local shop just would hate this to be a paper weight from something so small.
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by Stopsign32v
Knowing what I know now I'd never go B series again. I'd just buy a stock K24, put it in, and turbo the stock motor.
If this car wasn't an actual ITR chassis I'd cut it up so quick to put a K series in it I swear lmao.
Originally Posted by ls joker
I dont see where the chambers are uneven. Extra qualified opinions are always good affirmation
On the outside edges of each cylinder you can kinda see how it's not a smooth curvature all the way around. Easier to see in person but I will say I had no headgasket sealing issues etc so I wasn't too worried about it honestly. Yeah this machine shop mainly does american V8's mostly and KA motors from 240's. I know they dabbled in honda stuff back in the day but don't know if they've kept up with the times on what other race compaines are doing to these heads now.
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
Originally Posted by ls joker
I really liked my traum pistons. Especially compared to the wack je 81.5mm 9.0:1 pistons i had prior lol
What do you think happened to the journals on cylinder 4
The oil looked terrible. I didnt change it from the entire time i messed with tuning the skunk cams. It popped a vac/boost line and was running rich the last track event. Its had a bunch of tuning time and 3 track days on the same oil. Its 100 percent my fault the bearing let go.
05-03-2024, 11:04 AM
Re: **OFFICIAL FORCED INDUCTION RANDOM CHAT THREAD**
