|
|
|
Your donations help keep this valuable resource free and growing. Thank you.
|
Boost limit of a stock 360 |
Post Reply 
|
Page 123> |
| Author | |
ghinmi 
AMC Addicted 
Joined: Apr/04/2010 Location: Grand Rapids MI Status: Offline Points: 978 |
 Post Options
 Thanks(1)
 Quote Reply
 Topic: Boost limit of a stock 360Posted: Sep/20/2014 at 7:31am |
|
Is approximately 45 psi. Got fed up with the poor track management, I'd been there 5 hours and was just getting set to make my second pass so I just rigged the wastegate shut. Came out soft, the turbo started to light, then the boost just skyrocketed and it popped at approximately 45 psi. So I pedaled it, re-built boost, popped again, repeated 4-ish times all the way down the track. Now the motor doesn't run and just freewheels when I hit the starter. zero compression anywhere. Still ran 12.8 @ 106 with all the pedaling and hurt motor. Success.
Stock 360 unknown condition, never opened. Torker intake, 950 e85 blowthru carb, and 83mm turbo are the only mods. |
|
|
1975 Cherokee S - Turbo Hemi stick shift autocross/drag race/street 9.97 @ 140.4
|
|
 |
|
|
SirDigger
Supporter of TheAMCForum 
Joined: May/23/2012 Location: Germany Status: Offline Points: 2455 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 7:47am |
|
I love your Understatment with "the only Mods"...
and with 45 PSI...you probably blew the Piston Rings in the Oilpan...  |
|
|
SirDigger&his german Friends are looking for Parts http://theamcforum.com/forum/the-german-amc-forum-ambassadorsirdigger-needs_topic83570.html
1970 Javelin SST 304 1970 Javelin SST 360 |
|
|
|
|
401jim
Supporter of TheAMCForum
Joined: Jan/07/2012 Location: Brunswick,Ohio Status: Offline Points: 793 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 10:20am |
|
Holy Crap!!!! Its a wonder you didn't drive over the crank. Poor 360 had no chance to survive! 15 P.S.I would have been plenty. Send pics of this poor girl.......
|
|
|
|
|
|
|
ghinmi
AMC Addicted
Joined: Apr/04/2010 Location: Grand Rapids MI Status: Offline Points: 978 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 12:18pm |
|
My first pass was at 7-8 psi and it went 13.6 @ 99. Should've gone quicker with that mph but the brakes wouldn't hold so I had to leave on basically no boost.
I was going to do a second pass at 15ish psi, then a third at unlimited but the track was so busy I was only able to get two runs in all day, the last one was after 11:00 and I got there at 6. I'm going to yank the motor, save the heads, and throw away the rest. I'll be sure to get pictures when that happens. |
|
|
1975 Cherokee S - Turbo Hemi stick shift autocross/drag race/street 9.97 @ 140.4
|
|
|
|
|
ghinmi
AMC Addicted
Joined: Apr/04/2010 Location: Grand Rapids MI Status: Offline Points: 978 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 12:26pm |
|
The best part is that even with all the pedaling and hurt pistons/head gaskets on every cylinder it still trapped 106. Which is a little over 400 wheel horsepower (500ish crank). Out of a stone stock 360 long block I pulled out of my field.
|
|
|
1975 Cherokee S - Turbo Hemi stick shift autocross/drag race/street 9.97 @ 140.4
|
|
|
|
|
Green AMX
AMC Addicted
Joined: Feb/16/2012 Location: Florida Status: Offline Points: 521 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 4:18pm |
|
It' probably just a bad starter
|
|
|
69 AMX 390 4speed go pack
72 Javelin 360 auto(sons) 82 Spirit (wife's 1st car)still not done |
|
|
|
|
ghinmi
AMC Addicted
Joined: Apr/04/2010 Location: Grand Rapids MI Status: Offline Points: 978 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 6:36pm |
|
Actually it's funny you should mention that. The thrust was out of this motor and the only reason I know this is because the flexplate would hit the starter sometimes, lol. The parts came today to correct that transmission issue that caused it.
|
|
|
1975 Cherokee S - Turbo Hemi stick shift autocross/drag race/street 9.97 @ 140.4
|
|
|
|
|
tsanchez
AMC Addicted
Joined: Jul/09/2007 Location: Arizona Status: Offline Points: 4303 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 6:49pm |
|
44 is it then, I did a similar thing to my old sandrail with a draw thru turbo, unhooked waste gate ant ran it, broke the boost gage and did 3Rd gear 80 mph funny car style burnouts. Haha so fun when you don't care
|
|
|
|
|
|
|
Slate
AMC Addicted
Joined: Feb/28/2012 Location: Airyzona Status: Offline Points: 2782 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 7:53pm |
Dang it! You beat me to it. Although 45 is the absolute limit, so 44.99 should be safe Steve
|
|
|
|
|
ghinmi
AMC Addicted
Joined: Apr/04/2010 Location: Grand Rapids MI Status: Offline Points: 978 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/20/2014 at 8:10pm |
|
Yep, if someone wants to donate another stock 360 I'll try 44 psi next time.
|
|
|
1975 Cherokee S - Turbo Hemi stick shift autocross/drag race/street 9.97 @ 140.4
|
|
|
|
|
Post Reply
|
Page 123> |
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Click for TheAMCForum Rules
Topic Options
tsanchez wrote: