ln2 valve retainers - Performance Forum - j-body.org

ln2 valve retainers - Performance Forum

Forum Post / Reply
You must log in before you can post or reply to messages.

ln2 valve retainers

Monday, April 27, 2009 6:16 PM

i am still looking into the final options and it isnt cheap... but will talking with the other local cavalier racer he mentioned a bmw valve spring retainer. i have done some searching tonite and will be calling the dealership tomorrow but it looks like the 87-94 BMW 750 iL came with a v12 with 7 MM stemmed valves and had a large o.d. retainer, some aftermarkets even look like they offer this to have a dual spring... ill update again hopefully with prices and pics

btw the retainers are titanium, stock!

Re: ln2 valve retainers

Monday, April 27, 2009 7:51 PM

Luis Marroquin

are you looking both for locks and retainers? I would definitely be down for a set of 8 if you get some, this would take me one step closer to finishing the head.

Re: ln2 valve retainers

Tuesday, April 28, 2009 3:17 AM

Bob Guptill

it looks like the stock lock/keeper is the same angle

Re: ln2 valve retainers

Tuesday, April 28, 2009 4:09 AM

slowolej

Some VW engines also use 7mm stems. We were looking at a set for the head I built.

This fight is part of the reason I switched to 11/32" stems. Competition products sent out a flyer a couple of months ago with name brand titanium spring retainers for SBC for $5 each. I've never seen a 7mm retainer at close to that price.

-->Slow

Re: ln2 valve retainers

Tuesday, April 28, 2009 7:09 AM

OHV notec

You can usually buy used 7mm Ti nascar retainers on ebay and have them re-cut to your specs for $5 each.

fortune cookie say: better a delay than a disaster

Re: ln2 valve retainers

Tuesday, April 28, 2009 5:48 PM

Bob Guptill

notec i saw those on ebay last night, i wonder what degree locks they are

Re: ln2 valve retainers

Tuesday, April 28, 2009 6:07 PM

Bob Guptill

i guess why cant we run these? http://cgi.ebay.com/ebaymotors/DEL-WEST-TITANIUM-RETAINERS-1-450-11-32-5-16-7MM-STEM_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el1116QQhashZitem130256189590QQitemZ130256189590QQptZRaceQ5f CarQ5fParts.
mad jack what is the installed height for teh stock valve springs

Re: ln2 valve retainers

Tuesday, April 28, 2009 6:16 PM

MadJack

The locks on those are going to be much bigger than the LN2's. Some one had looked into those style retainers and found you need the corresponding locks also. IIRC, the locks on those are the single rectangular groove, while the LN2s use a single bead groove. I would say investigate the 7mm locks for those retainers to be sure.

The installed hight on the 2.2's is 1.71", the 2200's had an installed hight of 1.6". The 2.2L head can be machined down to fit a 1.800" installed hight spring, such as those used on the LS series motors.

Re: ln2 valve retainers

Wednesday, April 29, 2009 7:54 PM

Bob Guptill

what about running teh crane ls series bee hive springs, they are 1.8 installed height and .600 lift, i am only running a .450 cam wouldnt those just drop in but have a little more seat pressure?

Re: ln2 valve retainers

Thursday, April 30, 2009 1:43 AM

MadJack

Crane didn't have a Beehive spring, but the Comp Cams 26981 is a drop in on the "97 and older LN2. The loss of the .010" installed hight causes a loss of about 3.5lbs of seat pressure, something you'll barely notice.

I've posted this before, but this is a list of Beehive valve springs that would fit the older LN2s, but most require machining the valve seats down .090" to fit the 1.800" installed hight.

1.800” Beehive Valve Springs

GMPP # 12589774 Beehive Style Valve Springs

Standard L76/L92 springs
1.800" installed height @ 90 # pressure
1.300" @ 264 # pressure
Max lift 0.530"
348 lbs / in spring rate
? coil bind

GMPP # 12586484 Beehive Style Valve Springs

Standard LS6/LS3 springs
1.800" installed height @ 90 # pressure
1.250" @ 295 # pressure
Max lift 0.570"
373 lbs / in spring rate
? coil bind

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Comp Cams # 26915 Beehive™ Valve Springs

105 lbs @ 1.800” installed height
293 lbs @ 1.200” open height
0.600" maximum lift
313 lbs / in spring rate
1.100" coil bind

Comp Cams # 26918 Beehive™ Valve Springs

125 lbs @ 1.800" installed height
367 lbs @ 1.150" open height
0.625" maximum lift
372 lbs / in spring rate
1.100" coil bind

Comp Cams # 26981 Beehive™ Valve Springs

Fits stock '97 & older LN2 spring pocket locks and retainers
110 lbs @ 1.700" installed height
292 lbs @ 1.175" open height
0.525" maximum lift
347 lbs / in spring rate
1.115" coil bind

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Isky Racing Cams # 165-A “B-HIVE” Form Valve Springs

130 lbs @ 1.800” installed height
320 lbs @ 1.200” open height
0.600” maximum lift
310 lbs / in spring rate
1.140” coil bind

Isky Racing Cams # 195-A “B-HIVE” Form Valve Springs

120 lbs @ 1.800” installed height
360 lbs @ 1.200” open height
0.625” maximum lift
380 lbs / in spring rate
1.100” coil bind

Re: ln2 valve retainers

Thursday, April 30, 2009 3:42 AM

Bob Guptill

thanks again man

Re: ln2 valve retainers

Thursday, April 30, 2009 7:06 AM

OHV notec

Bob Guptill wrote:i guess why cant we run these? http://cgi.ebay.com/ebaymotors/DEL-WEST-TITANIUM-RETAINERS-1-450-11-32-5-16-7MM-STEM_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el1116QQhashZitem130256189590QQitemZ130256189590QQptZRaceQ5f CarQ5fParts.
mad jack what is the installed height for teh stock valve springs

IIRC, the "super 7" locks are almost identical to LN2 locks (very small). I'll have to go through my boxes in the garage sometime and see if I can separate out which style is which.

fortune cookie say: better a delay than a disaster

Re: ln2 valve retainers

Thursday, April 30, 2009 3:27 PM

Bob Guptill

i looked on teh del west website adn they offer square cut and radius cut valves retainers and locks

Forum Post / Reply
You must log in before you can post or reply to messages.

Start New Topic Advanced Search