Will she blow?

~~RichGT~~ · 11-20-2020, 02:59 AM

https://imgur.com/gallery/JpgEwpT

Note the odd chirping/ ticking noise?

Motor has cleaned up 531. Head is decked, valves lapped (not by me), lash correct. Running the mis-ground iPd turbo cam from many years ago, was running at 2 deg advanced for years in stock 530 head. Timing seems off, I have modified dizzy to allow for the out of alignment keyway. Matches the original bad distributor, with new hall sensor wiring

89 b230ft, Lh2.2, leads, plugs, TPS reset and idle adjusted, new water pump, heater bypass valve, bypass hard pipe, yoshi turbo drain, phenolic inlets spacers.

Vac is good, vacuum lost in time with that chirp/tick. Any suggestions?

Harlard · 11-20-2020, 03:11 PM

The tick sounds like an exhaust leak. Chirp is likely overtightened belts. Also, reset your idle base settings. Also also, sounds like it's firing on 3. Definitely make sure the timing belt isn't off a tooth.

~~RichGT~~ · 11-20-2020, 04:06 PM

Quote:

Originally Posted by Harlard

The tick sounds like an exhaust leak. Chirp is likely overtightened belts. Also, reset your idle base settings. Also also, sounds like it's firing on 3. Definitely make sure the timing belt isn't off a tooth.

Yeah does sound like it’s on 3, thanks

LC4CARL · 11-20-2020, 05:11 PM

Quote:

vacuum lost in time with that chirp/tick.

Possibly an intake valve issue? Does the vacuum gauge swing dramatically? Compression OK?

~~RichGT~~ · 11-20-2020, 05:52 PM

Yep, vac gauge to zero, I’ll be pissed with the machinist if that’s the case! Compression good

90volvo · 11-20-2020, 08:02 PM

pull plug wire off one at a time. When you find the one that doesnt change anything. Thats the bad cylinder but, diffently sounds like something foreign in cylinder. I wouldnt run it anymore than you have to and pull head off. Good luck

ZVOLV · 11-21-2020, 05:03 PM

Unplug an INJECTOR one at a time to perform a cylinder drop test. Much safer.

LC4CARL · 11-21-2020, 08:26 PM

Remember that cool tool in shop class that would allow you to drop a cylinder at the touch of a button?

What is "out of alignment keyway?" Sounds bad...

~~RichGT~~ · 11-21-2020, 09:58 PM

Quote:

Originally Posted by LC4CARL

Remember that cool tool in shop class that would allow you to drop a cylinder at the touch of a button?

What is "out of alignment keyway?" Sounds bad...

The keyway where the distributor drive dog fits into the cam. The early turbo cams from IPD where ground 20 deg out of alignment from correct ignition timing. No time for this with work being busy before Xmas. I will report back with findings

James M · 11-21-2020, 10:12 PM

Quote:

Originally Posted by ZVOLV

Unplug an INJECTOR one at a time to perform a cylinder drop test. Much safer.

Nah, I enjoy the sweet sweet feeling of 20k volts hopping from my elbow to the strut tower

Harlard · 11-21-2020, 10:37 PM

Quote:

Originally Posted by James M

Nah, I enjoy the sweet sweet feeling of 20k volts hopping from my elbow to the strut tower

Btdt. No recommend.

ZVOLV · 11-21-2020, 10:46 PM

Dropping a fuel injector is also safer for the kitty.

11-20-2020, 02:59 AM	#1
~~RichGT~~ Banned Join Date: Mar 2009 Location: Tāmaki Makaurau, NZ	Will she blow? https://imgur.com/gallery/JpgEwpT Note the odd chirping/ ticking noise? Motor has cleaned up 531. Head is decked, valves lapped (not by me), lash correct. Running the mis-ground iPd turbo cam from many years ago, was running at 2 deg advanced for years in stock 530 head. Timing seems off, I have modified dizzy to allow for the out of alignment keyway. Matches the original bad distributor, with new hall sensor wiring 89 b230ft, Lh2.2, leads, plugs, TPS reset and idle adjusted, new water pump, heater bypass valve, bypass hard pipe, yoshi turbo drain, phenolic inlets spacers. Vac is good, vacuum lost in time with that chirp/tick. Any suggestions? Last edited by RichGT; 11-20-2020 at 04:05 AM..

11-20-2020, 08:02 PM	#6
90volvo Board Member Join Date: May 2017 Location: Eldorado Springs Mo.	pull plug wire off one at a time. When you find the one that doesnt change anything. Thats the bad cylinder but, diffently sounds like something foreign in cylinder. I wouldnt run it anymore than you have to and pull head off. Good luck __________________ 90 Volvo 240-my current setup. B230ft rebuilt -8.8 comp. -Stage 3 rsi cam 3 inch ex.-GTX3076r turbo ballbearing. ebay intercooler-3 inch IC piping- Oil cooler with 10an hose. port stock intake (weak, having a custom intake by viking fab.) Megasquirt 2-1300cc injectors (running E85) 530 head with big valves ported and assemble by culberro sons car- 93 240-15g turbo-chipped-95,000 miles. Slick car Leave feedback- http://forums.turbobricks.com/showthread.php?t=355413

11-21-2020, 05:03 PM	#7
ZVOLV <Master Tech> Join Date: Nov 2002 Location: California	Unplug an INJECTOR one at a time to perform a cylinder drop test. Much safer. __________________ No Start Thread

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11-20-2020, 05:52 PM	#5
~~RichGT~~ Banned Join Date: Mar 2009 Location: Tāmaki Makaurau, NZ	Yep, vac gauge to zero, I’ll be pissed with the machinist if that’s the case! Compression good

11-21-2020, 08:26 PM	#8
LC4CARL Aero challenged Join Date: Sep 2008 Location: Vancouver, WA	Remember that cool tool in shop class that would allow you to drop a cylinder at the touch of a button? What is "out of alignment keyway?" Sounds bad...

11-21-2020, 10:46 PM	#12
ZVOLV <Master Tech> Join Date: Nov 2002 Location: California	Dropping a fuel injector is also safer for the kitty.