Thread: Singh Grooves
View Single Post
Old 07-25-2012, 12:49 PM   #25 (permalink)
oil pan 4
Corporate imperialist
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,266

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 141.63 mpg (US)
Thanks: 273
Thanked 3,569 Times in 2,833 Posts
I read that these grooves can cause heads to crack.
It doesn't do much good if they work but cause your cylinder head to crack after 50,000 miles.

Unless you could keep your engine combustion chamber almost perfectly clean or at least very clean these grooves would likely cake up with soot. So unless you are running water injection any gains will be lost over time, rather quickly.

If these grooves were so effective then why haven't the OEMs picked up on it?
Apperantly Mercedes tried them at least for a little while and only used them once in production.
Pre-combustion chambers in general tend to be pretty cracktastic I would be hesitant to add more potential crack starting points.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote