home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > projects & restorations

Reply
 
Thread Tools Display Modes
Old 01-25-2017, 12:07 PM   #751
Harlard
Pro Sneaker Peddler
 
Harlard's Avatar
 
Join Date: May 2007
Location: PDX
Default

Quote:
Originally Posted by mblue240 View Post
He got married and bought a house, he's too busy adulting.
I did those things, plus had 2 kids, and swapped in a T-5 into mine last week. There is no excuse.
__________________


Herr Harlard am Erstens

1979 242 DL

Quote:
Originally Posted by t8fanning View Post
My knob has a big chunk of steel on it
Harlard is offline   Reply With Quote
Old 01-26-2017, 01:32 AM   #752
mblue240
Board Member
 
mblue240's Avatar
 
Join Date: May 2007
Location: Portland, Oregon
Default

Quote:
Originally Posted by Harlard View Post
I did those things, plus had 2 kids, and swapped in a T-5 into mine last week. There is no excuse.
When you turn 30 you slow down. Just wait and see.
__________________
-Michael

Tbricks build

Quote:
Originally Posted by b4_ford View Post
In Oregon, 5 Volvos in a parking lot isn't a meet, it's just a daily coincidence!

Quote:
Originally Posted by NChoy View Post
Yep, Michael is right.
mblue240 is offline   Reply With Quote
Old 02-12-2018, 09:08 PM   #753
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Turbobricks? What is this Turbobricks?
Quote:
Originally Posted by Harlard View Post
I did those things, plus had 2 kids, and swapped in a T-5 into mine last week. There is no excuse.


I'll just leave these here for you guys to ponder.

http://forums.turbobricks.com/showthread.php?t=66779
http://forums.turbobricks.com/showth...hlight=flyfaen
http://forums.turbobricks.com/showthread.php?t=310630
http://forums.turbobricks.com/showth...en#post5080589

Last edited by klr142; 02-13-2018 at 08:55 PM..
klr142 is offline   Reply With Quote
Old 02-12-2018, 09:17 PM   #754
Redwood Chair
K-jet For Life
 
Redwood Chair's Avatar
 
Join Date: Mar 2007
Location: - Stock PSI Or Bust -
Default

__________________
Raise The Lowered


Image hosted by servimg.com

Quote:
Originally Posted by hiperfauto View Post
Folks on here don't know a good deal when they see it.
how psi stock can support?

Redwood Chair is online now   Reply With Quote
Old 02-12-2018, 09:25 PM   #755
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Hi Ken!!
klr142 is offline   Reply With Quote
Old 02-12-2018, 09:31 PM   #756
Redwood Chair
K-jet For Life
 
Redwood Chair's Avatar
 
Join Date: Mar 2007
Location: - Stock PSI Or Bust -
Default



Couple of us still driving these old buckets.
Redwood Chair is online now   Reply With Quote
Old 02-12-2018, 09:40 PM   #757
Jack
junkman
 
Jack's Avatar
 
Join Date: Jul 2011
Location: The Ass Cheek Of History
Default

Quote:
Originally Posted by mblue240 View Post
He got married and bought a house, he's too busy adulting.
Adults don’t use “adulting”
__________________
85 245 | 82 242| 75 245| 69 145 |66 122

Make old cars great again

Quote:
Originally Posted by BritishBrick
Don’t bother, I would literally rather throw them away than give you the pleasure. I will never sell to you.
Jack is offline   Reply With Quote
Old 02-13-2018, 01:46 PM   #758
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Quote:
Originally Posted by klr142 View Post
Turbobricks? What is this Turbobricks?



I'll just leave these here for you guys to ponder.
Just in case no one clicked a link, here's a more direct statement:

http://forums.turbobricks.com/showpo...0&postcount=26

Last edited by klr142; 02-13-2018 at 08:46 PM..
klr142 is offline   Reply With Quote
Old 02-13-2018, 01:57 PM   #759
122power
dude
 
122power's Avatar
 
Join Date: Feb 2009
Location: Where have all the quad squares gone? VV,Ca
Default

Dude its cracked, lol
__________________
Post pics in Orhpan Thread or YOU will be banned.
122power is online now   Reply With Quote
Old 02-13-2018, 04:39 PM   #760
doucheNozzle
Newbie
 
doucheNozzle's Avatar
 
Join Date: Feb 2009
Location: The Pitt, 15218
Default

Quote:
Originally Posted by 122power View Post
Dude its cracked, lol
Re: timing

Sorry, my question came off like the rest of my comments: dickish. From reading Njal's post, it sounded like the big advantage was to be able to add extra timing and to run leaner. Was curious what you were going to do.
__________________

'95 850 T-5R - FailSedan
'04 V70 T5A - FailFamily
doucheNozzle is offline   Reply With Quote
Old 02-13-2018, 05:10 PM   #761
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Thumbs up

Quote:
Originally Posted by doucheNozzle View Post
Re: timing

Sorry, my question came off like the rest of my comments: dickish. From reading Njal's post, it sounded like the big advantage was to be able to add extra timing and to run leaner. Was curious what you were going to do.



WHY GROOVE?!


I want to increase the detonation threshold. I want to be able to run more advanced ignition timing(if necessary to make more power). I want to have better idle quality and reduced emissions at idle while still having a decently large camshaft(see the emissions test results from last year below). I want to be able to drive around the car at obnoxiously low rpm when I don't need more power for better gas mileage. I want better acceleration under 2000rpm without going to a smaller camshaft. I want to be able to run even higher static compression with an even larger camshaft in the future, without giving up all of my low rpm drivability.

The head is now off, I just need to do the grooves after I figure out exactly how I'm going to do them and then put the head back on the car. I am NOT even cleaning the carbon build-up in the chambers or piston tops so it's a back to back comparison. Not changing the spark plugs(or their rotation). Nothing is being changed but the grooves and a fresh oil change. The oil that's in the engine now only has 2,000 miles on it and is clean still, barely darker than fresh.

Last edited by klr142; 02-14-2018 at 01:27 AM..
klr142 is offline   Reply With Quote
Old 02-13-2018, 06:26 PM   #762
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Car's current spec:

-230k mile, original bottom end, never been touched and with some cylinder bore wear and very slight oil consumption. Full synthetic oil.
-Stock 530 cylinder head with low hours/mileage since rebuilding(was used on the General Leif for a while). Very mild port work. ~.032" shaved off of it. Untouched chambers.
-H camshaft advanced 2° with valve clearances initially set to ~.015" on the intakes and ~.017" on the exhausts.
-.036" MLS headgasket.
-87° C thermostat, stock cooling system with proper air guides.
-Stock b230F intake manifold, air filter and airbox with exhaust preheat routed to cold air and flapper removed.
-KGT/Timos Type 1 header with 44mm primaries and custom Type 3/51mm sized secondaries added. Shortened secondaries when compared to original header using Columbia River Mandrel Bending's tubing and merge.
-Custom 2.5" exhaust with a small Magnaflow spun/race cat, a small Magnaflow muffler for a resonator in stock location and a Dynomax Super Turbo(junk, just wanted it quieter but it really needs softer motor mounts) at the back.
-LH2.4 + EZK, various tunes including stock and not depending on what I want and the temperature and so on.
-Stock ignition components, NGK BPR7ES spark plugs.
-M47 transmission w/3.73 rear end(Trutrac diff).
-225/45-17 DWS 06 tires on Tethys.
-Full interior with added sound deadening and a 10" sub w/amp in the trunk.
-Chevron "Supreme" 92 octane gas, full tank.

Combustion chamber pictures after 12,000 miles since last cleaned/installed(sorry for size):



#1-3 look generally like this:


#4 has more build-up, maybe from oil burning? Maybe from #4 running hotter because it's at the back of the engine? Maybe because?

Last edited by klr142; 02-14-2018 at 01:43 AM.. Reason: More info
klr142 is offline   Reply With Quote
Old 02-13-2018, 10:30 PM   #763
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Performance:(more information to come)



Emissions testing from early 2017 with the same setup but the valves adjusted to .018/.020"(later checked at .020-.021" before resetting them to .015/.017" after passing DEQ)


Last edited by klr142; 02-14-2018 at 01:43 AM..
klr142 is offline   Reply With Quote
Old 02-13-2018, 11:43 PM   #764
Quin
ಠ_ಠ
 
Join Date: Jun 2007
Location: Soldotna, AK
Default

very curious to see the after chart.
__________________
Quin is offline   Reply With Quote
Old 02-14-2018, 01:28 AM   #765
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Me too!
klr142 is offline   Reply With Quote
Old 02-15-2018, 06:13 PM   #766
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

HMMM!



#4 is the old way of thinking and more tried and true Somender Singh groove variant(with various number of grooves on the larger quench surface). The swirl in the chamber supposedly goes opposite that groove towards the spark plug though, so options 2 and 3 may be better???

That being said, more modern OEM 2V heads look more like #1 with the quench pads even more gone, particularly on the exhaust side(tapered into the cylinder) and the spark plug unshrouded. I don't want to reduce my compression that much and make that large of a change on this iteration, though. This is more of a basic proof of concept attempt and then I'll go further with my big valve, ported head for the next setup.
Quote:
Interesting info from Datsun L series heads:
"There are two main combustion chamber designs, commonly known as “open” and “closed,” or “peanut,” referencing the similarity of the closed-chamber shape to that of the typical peanut shell. Neither book referenced earlier really describes the differences in chamber design or why there are differences in the first place. Put simply, the open heads resulted in lower compression ratios. The open chamber design reduced hydrocarbon (HC) emissions for US offerings and did not do much else beneficial to the 510 enthusiast. With their lower compression the engines were tuned less aggressively and produced somewhat less emissions but as a result were less efficient and more susceptible to detonation.

The closed heads were designed with a good amount of quench area, the flat bottom of the cylinder head exposed to the combustion chamber. This quench area helps to add turbulence to the intake charge as the piston rises to TDC on the combustion stroke. This turbulence is beneficial because it helps to mix the air and fuel, providing a more homogeneous mixture and a stronger power stroke upon ignition. As typically the closed heads were fitted to engines with flat-top pistons to maximize the benefits of the closed-head design, there was minimal space between the top of the piston and the quench area (often just the thickness of the head gasket). The one downside of closed chambered heads is that the quench area can shield a small amount of the fuel from igniting, resulting in higher HC emissions. Thus the closed chambered heads were not selected for meeting USA emissions requirements."

https://en.wikipedia.org/wiki/Hemisp...ustion_chamber
Modern design at the bottom, basically spark plug is more in the chamber instead of being shrouded, the chamber is open with smaller quench pads and everything is tapered up. None of these vertical walls that Volvo has in the combustion chamber design from the '40s or whatever.

V8 high flow head:
http://d23c3kq2pqf30j.cloudfront.net...chief-2_lg.jpg

Erland's work:
http://www.topplocksverkstan.se/fyrtaktsid6.html

Motordesign:
http://www.motordesign.se/images/F%C...A4ningsrum.JPG

Etc..

Last edited by klr142; 02-15-2018 at 07:37 PM..
klr142 is offline   Reply With Quote
Old 02-16-2018, 02:21 AM   #767
122power
dude
 
122power's Avatar
 
Join Date: Feb 2009
Location: Where have all the quad squares gone? VV,Ca
Default

From what ive read on chamber readings you want it to be directed torwards the exhaust valve. Are you doing dimples on the clean chamber wall also?
Yeah the volvo chamber sucks for design.

Last edited by 122power; 02-16-2018 at 02:28 AM..
122power is online now   Reply With Quote
Old 02-16-2018, 12:56 PM   #768
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Quote:
Originally Posted by 122power View Post
From what ive read on chamber readings you want it to be directed torwards the exhaust valve. Are you doing dimples on the clean chamber wall also?
Yeah the volvo chamber sucks for design.
Yes, directing towards the hot exhaust valve is suggested. I'm not doing anything with the chamber walls for now, just adding a single groove or three. Right now I'm leaning towards just doing a larger one on the main quench pad, thus leaving the rest of the chamber open to further modification in the future.
klr142 is offline   Reply With Quote
Old 02-16-2018, 03:43 PM   #769
gsellstr
Vintage anti-ricer
 
gsellstr's Avatar
 
Join Date: Oct 2004
Location: Somewhere in a northern California smog bank
Default

Seems like Option 2 might encourage swirl a little more than #3.

That said, what is this BS of doing a controlled test, before/after, numbers, etc.? It's hogwash around here, you know that. lol
/end TB mentality

I'm VERY curious to know what you find! I played with it years back when I swapped on a 530, seemed like it did help the detonation issue slightly, but that was purely SOTP impression. If you find something that does indeed help, I might go that route next time the 531 comes off.
__________________
RIP
Doug Williams aka Mr. Doug 4/15/2009
Pete Fluitman aka fivehundred 7/14/2013
Mick Starkey aka TrickMick 1/10/14

74 144 B20
http://forums.turbobricks.com/showthread.php?t=224983

90 745Ti
http://forums.turbobricks.com/showthread.php?t=334698

If you need Superpro bushings PM me for price and availability!
gsellstr is offline   Reply With Quote
Old 02-16-2018, 04:50 PM   #770
klr142
Turbo, what?
 
klr142's Avatar
 
Join Date: May 2004
Location: OR
Default

Yeah!

Last edited by klr142; 02-16-2018 at 04:51 PM.. Reason: I already said above... getting confused talking on fb and here.
klr142 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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 On

Forum Jump


All times are GMT -4. The time now is 01:17 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.