How many of you 632 & up guys run light tension springs, I'm rebuilding my 632 now and I have both light & std. tension rings, I would like to take full advantage of my 5 stage dry sump & 4 vane enhanced vac. pump & gas ported slugs but am worried if it'll 'Huff' alittle....my machinist/advisor don't like using light tension rings on big bore pistons. Thanks!
March 30, 2018, 01:21 PM
HSMITH1039
A little smoke on start up never hurt anyone.....lol....
March 30, 2018, 01:29 PM
Richie
This is diceman1530 's old motor built by PAR w/ light tension rings. Hoping for 1100 hp. ...that's 1 vote for light by Howie...
March 30, 2018, 02:05 PM
1320racer
quote:
Originally posted by HSMITH1039: A little smoke on start up never hurt anyone.....lol....
Agreed but my engine is 17 cubic inches shy of the club.
March 30, 2018, 03:31 PM
TOP38
quote:
Originally posted by Richie: How many of you 632 & up guys run light tension springs, I'm rebuilding my 632 now and I have both light & std. tension rings, I would like to take full advantage of my 5 stage dry sump & 4 vane enhanced vac. pump & gas ported slugs but am worried if it'll 'Huff' alittle....my machinist/advisor don't like using light tension rings on big bore pistons. Thanks!
What size is the oil ring,, 3 mm standard tension rings are pretty light to start with vs 3/16"This message has been edited. Last edited by: TOP38,
March 30, 2018, 03:39 PM
TOP38
quote:
Originally posted by HSMITH1039: A little smoke on start up never hurt anyone.....lol....
Just like with the Q,,, cheater!!!
March 30, 2018, 04:43 PM
HSMITH1039
Easy Patroit lover.........
March 30, 2018, 04:46 PM
Richie
Yup, 3 mm. The low tension set is 11-12#'s, can't find info on set that is on pistons now - he told me they were 14#'s....JG7708-4600-5 Ain't a whole lot of difference there so I'll throw them in as-is w/ 14's...
March 30, 2018, 04:55 PM
BP758
How much vac can you draw?
Raceless in California!
March 30, 2018, 05:34 PM
TOP38
quote:
Originally posted by HSMITH1039: Easy Patroit lover.........
The correct word is fan! Pat's fan!
BTW I thought Q was not allowed in Comp!
March 30, 2018, 05:51 PM
HSMITH1039
Comp? I'm just a bracket racer.....lol
March 31, 2018, 05:15 AM
Spanky@Wilson Race Engines
I would stick with 14#. It will probably be 8 when its running. The aluminum block grows. The bore isn't exact because its been honed a second or third time.
April 01, 2018, 12:52 PM
Paul S/Q
I didn't see anyone ask , will this engine see any nitrous ???
April 01, 2018, 05:58 PM
ski_dwn_it
Machinist of mine doesn't want me running them, so never have. At 555ci. It's is not worth the little bit of power and since I bracket race... Always come back to probably not worth it.
3700#+210lb driver, FULL interior, through mufflers, 10.5 tire. 60'-1.333 (IN 4000ft DA! Joisy Math excluded; 1.25sec using JOISY MATH.) 1/4 - 9.60@144MPH
April 02, 2018, 04:53 PM
Bob Nichols
Don't do the light rings. You will make more HP with an oil free cylinder than you will by reduced drag on the oil ring.
April 02, 2018, 05:24 PM
Kenneth
I wouldn't run anything but those. If the hone is right it won't smoke, especially with lots of vacuum.
Abbott Racing Heads (432) 558-2841
April 03, 2018, 09:19 AM
Goob
quote:
Originally posted by Bob Nichols: Don't do the light rings. You will make more HP with an oil free cylinder than you will by reduced drag on the oil ring.
This ^^^^^^ Not worth taking the chance of oil contaminating your combustion chamber, it's a quick path to detonation.
"Despite the high cost of living, it remains popular." Dave Cook N375
April 03, 2018, 10:57 AM
Richie
Thanks all, I went w/ the 14# rings - I already had a detonation failure once upon a time, don't want that again...Motors going in 2-nite!
