Slant *        6        Forum
Home Home Home
The Place to Go for Slant Six Info!
Click here to help support the Slant Six Forum!
It is currently Sat Apr 19, 2025 8:03 am

All times are UTC-07:00




Forum locked  This topic is locked, you cannot edit posts or make further replies.  [ 15 posts ] 
Author Message
 Post subject: TRW pistons
PostPosted: Fri Jul 06, 2001 8:12 am 
I was just checking inventory at Federal Mogul on the TRW forged pistons that we have left for slant 6 engines and thought I would share it with you. The results are as follows:
L2125F Std.- 6 pistons
L2125F .030"- 41 pistons

L2502F Std.- 56 pistons(2.2L with 198 rods)
L2502F 100mm- 4 pistons



jharri2@fmo.com


Top
   
 Post subject: Re: TRW pistons
PostPosted: Fri Jul 06, 2001 2:05 pm 
Quote:
: I was just checking inventory at Federal Mogul
: on the TRW forged pistons that we have left
: for slant 6 engines and thought I would
: share it with you. The results are as
: follows: L2125F Std.- 6 pistons
: L2125F .030"- 41 pistons
:
: L2502F Std.- 56 pistons(2.2L with 198 rods)
: L2502F 100mm- 4 pistons

OHHHH Charlie: bust out the check book ;)

beardliz@msn.com


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Fri Jul 06, 2001 4:06 pm 
These are FORGED Pistons at a reasonable price. I have used both types and they are strong units. (also a bit heavy weight wise)
The 2125F uses the 6.700 225 con rod, the 2502 must be used with the 7.001 long 198 con rod.
I show this piston in my stroking article.
DD
Quote:
:
: I was just checking inventory at Federal Mogul
: on the TRW forged pistons that we have left
: for slant 6 engines and thought I would
: share it with you. The results are as
: follows: L2125F Std.- 6 pistons
: L2125F .030"- 41 pistons
:
: L2502F Std.- 56 pistons(2.2L with 198 rods)
: L2502F 100mm- 4 pistons


Top
   
 Post subject: Re: TRW pistons
PostPosted: Sat Jul 07, 2001 9:30 am 
Quote:
: OHHHH Charlie: bust out the check book ;)


No kidding. Just called Summit, and priced the L2125F+30 pistons. Talk about sticker shock. I used to get them for about $9.00 a piece. They are now just under $300 for a set of six.
Charlie

flturbo6@aol.com


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Sun Jul 08, 2001 2:39 pm 
where would your compression be at if you used a 2.2 liter or one of the vw 88mm pistons with the 6.700 rod and would milling the block and the head get you back up to a 8 to 1 cp ratio? could this be done?

andrew wagner
Quote:
:
: These are FORGED Pistons at a reasonable price.
: I have used both types and they are strong
: units. (also a bit heavy weight wise)
: The 2125F uses the 6.700 225 con rod, the 2502
: must be used with the 7.001 long 198 con
: rod.
: I show this piston in my stroking article.
: DD


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Sun Jul 08, 2001 4:06 pm 
Quote:
: where would your compression be at if you used
: a 2.2 liter or one of the vw 88mm pistons
: with the 6.700 rod and would milling the
: block and the head get you back up to a 8 to
: 1 cp ratio? could this be done?
:
: andrew wagner


Well Andrew, I can tell you this much. Mine with the 198 rods came up with a deck height of -.028" on a stock uncut deck. The 6.7 rod is about .300" shorter so theoretically, deck height would be -.328". You could probably get away with decking the block .125" which would get you back to about -.200" Chop about .090" off the head, and add an -.060" overbore, and theoretically you would be just about right. (This message not to be used for any purpose other than it's original intent)


aschumers@aol.com


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Sun Jul 08, 2001 4:23 pm 
Quote:
: Well Andrew, I can tell you this much. Mine
: with the 198 rods came up with a deck height
: of -.028" on a stock uncut deck. The
: 6.7 rod is about .300" shorter so
: theoretically, deck height would be
: -.328". You could probably get away
: with decking the block .125" which
: would get you back to about -.200" Chop
: about .090" off the head, and add an
: -.060" overbore, and theoretically you
: would be just about right. (This message not
: to be used for any purpose other than it's
: original intent)

i hacked .145 off my deck on an angle, and didn't hit water! it still runs.....

beardliz@msn.com


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Sun Jul 08, 2001 6:42 pm 
that gives me some ideas! thank you! I am just trying to get around using 198 rods since they are hard to find.

andrew wagner
Quote:
:
: Well Andrew, I can tell you this much. Mine
: with the 198 rods came up with a deck height
: of -.028" on a stock uncut deck. The
: 6.7 rod is about .300" shorter so
: theoretically, deck height would be
: -.328". You could probably get away
: with decking the block .125" which
: would get you back to about -.200" Chop
: about .090" off the head, and add an
: -.060" overbore, and theoretically you
: would be just about right. (This message not
: to be used for any purpose other than it's
: original intent)


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Sun Jul 08, 2001 7:30 pm 
Quote:
: that gives me some ideas! thank you! I am just
: trying to get around using 198 rods since
: they are hard to find.
:
: andrew wagner

this may not be a feasable alternative to all parties: instead of doing 198 rods and 2.2 pistons i decked the block .145 the surfacing machine was much closer than the rods and pistons at the time.

beardliz@msn.com


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Mon Jul 09, 2001 11:24 am 
Quote:
: where would your compression be at if you used
: a 2.2 liter or one of the vw 88mm pistons
: with the 6.700 rod and would milling the
: block and the head get you back up to a 8 to
: 1 cp ratio? could this be done?


I would get the 225 pistons and trim or machine a dish into these to adjust the CR to 8 to 1. These pistons have a thick head so there is lots of material there to work with.
DD


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Mon Jul 09, 2001 6:04 pm 
Quote:
: I would get the 225 pistons and trim or machine
: a dish into these to adjust the CR to 8 to
: 1. These pistons have a thick head so there
: is lots of material there to work with.
: DD

Do the 225 pistons have enough material to be machined down far enough to be used with the 198 rods? I am looking for about 12 to 1 compression and I have a set of 198 rods. THANKS! Darrin

dartman225@webtv.net


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Mon Jul 09, 2001 6:20 pm 
Quote:
: Do the 225 pistons have enough material to be
: machined down far enough to be used with the
: 198 rods? I am looking for about 12 to 1
: compression and I have a set of 198 rods.


No, there is not enough material on the 225 piston to do that.
Go take a look at the "Stroking the SL6" article I have posted in the article section, the "flat top" 2502 2.2 Forged piston will give you mid 11 to 1 CR and then you could mill the head / block for the rest.
DD


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Mon Jul 09, 2001 7:48 pm 
did you have anything done to the push rods since you milled the block?

andrew wagner
Quote:
: this may not be a feasable alternative to all
: parties: instead of doing 198 rods and 2.2
: pistons i decked the block .145 the
: surfacing machine was much closer than the
: rods and pistons at the time.


Top
   
 Post subject: Re: TRW Forged Pistons
PostPosted: Tue Jul 10, 2001 4:33 pm 
Quote:
: No, there is not enough material on the 225
: piston to do that.
: Go take a look at the "Stroking the
: SL6" article I have posted in the
: article section, the "flat top"
: 2502 2.2 Forged piston will give you mid 11
: to 1 CR and then you could mill the head /
: block for the rest.
: DD

Will a 1.78 intake and 1.50 exhaust valves fit in a .045 oversized bore? THANKS! Darrin

dartman225@webtv.net


Top
   
PostPosted: Wed Jul 11, 2001 4:59 am 
Quote:
: Will a 1.78 intake and 1.50 exhaust valves fit
: in a .045 oversized bore? THANKS! Darrin


The 1.78 is not a problem, the 1.50 exhaust will need to be checked, if the head / valve guides are well centered over the chambers, the 1.50 will clear. The exhaust side is close so everything must be checked for proper clearance.

The biggest valves I have put into a SL6 were 1.875 Int. and 1.540 Ext. on a 3.5 bore. (.100 overbore)
DD


Top
   
Display posts from previous:  Sort by  
Forum locked  This topic is locked, you cannot edit posts or make further replies.  [ 15 posts ] 

All times are UTC-07:00


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited