R3VLimited Forums

Go Back   R3VLimited Forums > E30 Technical Forums > Engine & Drivetrain > Alternative Tuning / W.A.R / Megasquirt / etc

Reply
 
Thread Tools Search this Thread
Old 03-15-2019, 09:39 AM   #61
SLEEPYDUB
E30 Addict
 
Join Date: Dec 2011
Location: Shreveport, LA
Posts: 587
How long can ARPs be reused? Curious Bc I've had mine off 4 times now

Sent from my SAMSUNG-SM-G935A using Tapatalk
SLEEPYDUB is offline   Reply With Quote
Old 03-15-2019, 09:48 AM   #62
turbski
Member
 
Join Date: Jul 2018
Location: nh
Posts: 92
That was the million dollar question. I have a couple friends that run insane boost in their diesels and re use them, I think it really depends on what arp gives for stretch limits and installing them correctly. I wont say it was the head studs fault for what happened because i was never able to get to the "root cause". I followed the recommendations from a lot of sources on this forum and my gut and replaced them as a precaution after hearing that the last time they were replaced there were questionable torque findings after a couple heat cycles
turbski is offline   Reply With Quote
Old 03-15-2019, 09:51 AM   #63
SLEEPYDUB
E30 Addict
 
Join Date: Dec 2011
Location: Shreveport, LA
Posts: 587
Do you have a dyno graph of that run?

Sent from my SAMSUNG-SM-G935A using Tapatalk
SLEEPYDUB is offline   Reply With Quote
Old 03-15-2019, 09:56 AM   #64
turbski
Member
 
Join Date: Jul 2018
Location: nh
Posts: 92
It was more than likely the culmination of a huge gaskets, older studs, and the fact we threw so much timing at it to attain the power it made on low boost.

I have put a feeler in another section "turbo pcv valve" because i believe my rings are letting go. Im getting more than a little bit of blowby coming from my vented catch can. When the head was off the cylinders showed almost no signs of cross hatch (glazed) im considering pulling the head to hone the cylinders and replace the rings
turbski is offline   Reply With Quote
Old 03-15-2019, 09:58 AM   #65
turbski
Member
 
Join Date: Jul 2018
Location: nh
Posts: 92
Name:  snip3.JPG
Views: 68
Size:  46.8 KBsure do
turbski is offline   Reply With Quote
Old 03-15-2019, 09:59 AM   #66
SLEEPYDUB
E30 Addict
 
Join Date: Dec 2011
Location: Shreveport, LA
Posts: 587
I get a ton of blowby too. My rings are definitely shot. But I'm still gonna send it till it can't anymore. Got a built 2.9 on the side ready to go once it does, but till then I'm gonna fill the gap with boost lol

Sent from my SAMSUNG-SM-G935A using Tapatalk
SLEEPYDUB is offline   Reply With Quote
Old 03-15-2019, 10:01 AM   #67
turbski
Member
 
Join Date: Jul 2018
Location: nh
Posts: 92
also forgot to mention that the electronic boost controller was plumbed ass backwards...…. the first 3 pulls we made caused the car to cut fuel due to the 21psi we kept hitting it with. hmmmmm sure that did not help my head gasket hahaha
turbski is offline   Reply With Quote
Old 03-15-2019, 10:03 AM   #68
turbski
Member
 
Join Date: Jul 2018
Location: nh
Posts: 92
Quote:
Originally Posted by SLEEPYDUB View Post
I get a ton of blowby too. My rings are definitely shot. But I'm still gonna send it till it can't anymore. Got a built 2.9 on the side ready to go once it does, but till then I'm gonna fill the gap with boost lol

Sent from my SAMSUNG-SM-G935A using Tapatalk
i don't know if i can live with it. i also hate doing thing cheap but funds are limited so when (if) i can get the motor out i am hoping that i can get away with a hone job and new rings to stop the blowby
turbski is offline   Reply With Quote
Old 03-21-2019, 10:34 AM   #69
varg
E30 Mastermind
 
varg's Avatar
 
Join Date: May 2014
Location: Palm Beach County, FL
Posts: 1,871
Quote:
Originally Posted by ForcedFirebird View Post
I would bet on the timing being too aggressive. ~21-22° at 140kpa is pushing the limit on a stock gasket and 93 pump fuel. Even in NA form, the engine doesn't need over 30.
Oops, I've been running 23-25° at 145kPa for a while now. Good thing that's a transient area and it's pretty much impossible for me to hold that manifold pressure due to creep. I run 12° to 14° advance at my target of 205kPa, generally have a dip of a couple of degrees around where I'm guessing peak torque is (~4,500rpm). No dyno time here of course just 'best guess' and trial and error on the street, my advance table would probably change drastically if I put it on the dyno and moved the values to see where they are relative to 'best power'.
__________________
@turbovarg
'91 318is, M20B25, T3/T04E 60 trim (15psi), megasquirt, coilovers, Z3 rack, cold AC
[b u i l d]
[Car of the month: April 2018]

Always outnumbered, never outgunned.
varg is offline   Reply With Quote
Old 03-21-2019, 10:39 AM   #70
SLEEPYDUB
E30 Addict
 
Join Date: Dec 2011
Location: Shreveport, LA
Posts: 587
Quote:
Originally Posted by varg View Post
Oops, I've been running 23-25° at 145kPa for a while now. Good thing that's a transient area and it's pretty much impossible for me to hold that manifold pressure due to creep. I run 12° to 14° advance at my target of 205kPa, generally have a dip of a couple of degrees around where I'm guessing peak torque is (~4,500rpm). No dyno time here of course just 'best guess' and trial and error on the street, my advance table would probably change drastically if I put it on the dyno and moved the values to see where they are relative to 'best power'.
I've been running about that much too on E85. I definitely hit that amount of timing at that pressure

Sent from my SAMSUNG-SM-G935A using Tapatalk
SLEEPYDUB is offline   Reply With Quote
Old 03-21-2019, 11:13 AM   #71
ForcedFirebird
R3V OG
 
ForcedFirebird's Avatar
 
Join Date: Feb 2007
Location: WOT-Tech, Florida
Posts: 6,228
Quote:
Originally Posted by varg View Post
Oops, I've been running 23-25° at 145kPa for a while now. Good thing that's a transient area and it's pretty much impossible for me to hold that manifold pressure due to creep. I run 12° to 14° advance at my target of 205kPa, generally have a dip of a couple of degrees around where I'm guessing peak torque is (~4,500rpm). No dyno time here of course just 'best guess' and trial and error on the street, my advance table would probably change drastically if I put it on the dyno and moved the values to see where they are relative to 'best power'.

He is at 25° peak TQ and 175kpa....23° isn't going to blow you up at 140kpa if you listened for knock.
__________________
john@m20guru.com
Links:
Transaction feedback: Here, here and here. Thanks
ForcedFirebird is offline   Reply With Quote
Old 03-22-2019, 08:36 AM   #72
turbski
Member
 
Join Date: Jul 2018
Location: nh
Posts: 92
from what I have seen posted for other maps my ignition advance does not look a whole lot different from most of them. I am new at tuning 100%. could you educate me on what you are seeing with the tune im currently running? the car seems to run very well in most areas of it, the exception being cold starts (no icv) and cruising in 3rd gear with steady throttle.
turbski is offline   Reply With Quote
Old 03-22-2019, 09:08 AM   #73
ForcedFirebird
R3V OG
 
ForcedFirebird's Avatar
 
Join Date: Feb 2007
Location: WOT-Tech, Florida
Posts: 6,228
Start with -2° off the stock tables for timing for 1psi of boost. I posted the stock tables earlier in the thread. Then add timing while listening for knock.
__________________
john@m20guru.com
Links:
Transaction feedback: Here, here and here. Thanks
ForcedFirebird is offline   Reply With Quote
Old 03-22-2019, 09:08 AM   #74
Jaxx_
E30 Mastermind
 
Jaxx_'s Avatar
 
Join Date: Dec 2009
Location: Durham, NC, USA
Posts: 1,725
Quote:
Originally Posted by turbski View Post
from what I have seen posted for other maps my ignition advance does not look a whole lot different from most of them. I am new at tuning 100%. could you educate me on what you are seeing with the tune im currently running? the car seems to run very well in most areas of it, the exception being cold starts (no icv) and cruising in 3rd gear with steady throttle.
It's the tables you posted? I'm honestly surprised it runs well. Your fuel table looks very... Unpolished. What are you boost targets? 8psi? And boost cut at 21psi?

It is a little hard to tell the AFRs you are seeing on your dyno sheet, simply because the scale isn't great—wanna post a log?
__________________
'84 318i M10B18 | 93whp/90ftlbs | 147- Safari Beige | MS2E w/ LC, 2-Step
Jaxx_ is offline   Reply With Quote
Old 03-22-2019, 09:24 AM   #75
turbski
Member
 
Join Date: Jul 2018
Location: nh
Posts: 92
I don't know if I have a log of post tuning. that I will have to look for. we did have the remote knock detectors hooked up on the block while tuning. I wont be able to post a log for a while, looking out the window...… and its friggin snowing again....
turbski is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 12:48 PM.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2004 - 2020 R3VLimited LLC