Slant *        6        Forum
Home Home Home
The Place to Go for Slant Six Info!
Click here to help support the Slant Six Forum upgrade!
It is currently Thu Jun 04, 2020 11:50 pm

All times are UTC-07:00




Post new topic  Reply to topic  [ 20 posts ]  Go to page 1 2 Next
Author Message
PostPosted: Mon Jan 20, 2020 1:47 pm 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 5714
Location: IRWIN PA
Car Model*:
Can a wiseco piston be hung on a stock type 225 Rod?

Greg

_________________
Greg Ondayko
http://www.youtube.com/hyperpack
Image


Top
   
PostPosted: Mon Jan 20, 2020 3:21 pm 
Offline
Board Sponsor

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 6412
Location: Waynesboro, Pa.
Car Model*: 65 Valiant 2Dr Post
I wouldn't know why not??

_________________
2 Mopars come with Spark plug tubes. One is a highly refined, world class, racing machine. The other is a 426 CI. boat anchor!
Image
Image


Top
   
PostPosted: Mon Jan 20, 2020 3:43 pm 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 5714
Location: IRWIN PA
Car Model*:
Well the stock rods use press fit pins and the wisecos use floating pins.

Would that combo use the wiseco pins?

Do the wiseco pins get pressed into the stock rods?

Greg

_________________
Greg Ondayko
http://www.youtube.com/hyperpack
Image


Top
   
PostPosted: Mon Jan 20, 2020 4:17 pm 
Offline
SL6 Racer & Moderator
User avatar

Joined: Sat Oct 19, 2002 12:06 pm
Posts: 7425
Location: Silver Springs, Fl.
Car Model*:
Stock rods can be "floated". But using the Wiseco pistons on stock 225 rods, will have the piston way down in the bore, much further then the stock piston.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170


Top
   
PostPosted: Mon Jan 20, 2020 5:43 pm 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 5714
Location: IRWIN PA
Car Model*:
Thanks charrlie.

To do that does the stock Rod require machining?

I will have to measure / compare compression heights.


Greg

_________________
Greg Ondayko
http://www.youtube.com/hyperpack
Image


Top
   
PostPosted: Mon Jan 20, 2020 7:00 pm 
Offline
Guru
User avatar

Joined: Sat Oct 12, 2002 11:22 am
Posts: 3609
Location: Sonoma, Calif.
Car Model*: Many Darts and a Dacuda
The right way to float the piston pin in the rod is to machine the small end of the con rod to accept a pin bushing, press-in the bushing and hone it to finish size.
Another way is to simply hone the rod's small end to the correct clearance dimension and run "steel-on-steel". (a hardened steel pin on a forged steel con rod)
In ether case, an oil hole should be added at the top of the rod, to allow oil to enter the pin area.
DD


Top
   
PostPosted: Tue Jan 21, 2020 2:46 am 
Offline
Board Sponsor & Moderator
User avatar

Joined: Mon Oct 21, 2002 11:08 am
Posts: 14260
Location: Blacksburg, VA
Car Model*:
Nice discussion. Mike J floated steel on steel way back when. Dennis might have a motor like that?

Why use the short piston on the short rod? Stroker crank?

Lou

_________________
"You mean you still have a Slant 6 in that thing?"


Top
   
PostPosted: Tue Jan 21, 2020 8:50 am 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 5714
Location: IRWIN PA
Car Model*:
No I wasnt thinking stroker crank, yet...but i have some very small cc heads that I wanted to use...

Just thinking.

Greg

_________________
Greg Ondayko
http://www.youtube.com/hyperpack
Image


Top
   
PostPosted: Tue Jan 21, 2020 9:36 am 
Offline
Guru
User avatar

Joined: Sat Oct 12, 2002 11:22 am
Posts: 3609
Location: Sonoma, Calif.
Car Model*: Many Darts and a Dacuda
The 1.6 compression height piston may be a little too short. (appx a -.300 D.H.)
This would get a static compression around 7.7 with a 35 cc head chamber.
Maybe look at the specs for the export SL6 7 to 1 CR piston, that may-be a better option.
DD


Top
   
PostPosted: Tue Jan 21, 2020 11:30 am 
Offline
Board Sponsor
User avatar

Joined: Sun Nov 03, 2002 9:55 pm
Posts: 472
Location: Gloucester, Va
Car Model*:
I have run floated stock rods before with no issues. Oil hole in the top.
Current race motor has 6.7 inch rods and Wiseco pistons..plus a turbo.


Top
   
PostPosted: Tue Jan 21, 2020 12:20 pm 
Offline
SL6 Racer & Moderator
User avatar

Joined: Sat Oct 19, 2002 12:06 pm
Posts: 7425
Location: Silver Springs, Fl.
Car Model*:
As stated, floating steel rods, without bushings is not a problem. Having the oil hole is critical. Over the years I have done many steel on steel floating. On many different engines. On many stock rods there is not enough "meat" on the small end to add a bushing, safely.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170


Top
   
PostPosted: Tue Jan 21, 2020 12:40 pm 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 5714
Location: IRWIN PA
Car Model*:
What is the the compression height of std / stock 225 /198/ 170 pistons?

Greg

_________________
Greg Ondayko
http://www.youtube.com/hyperpack
Image


Top
   
PostPosted: Tue Jan 21, 2020 12:51 pm 
Offline
Board Sponsor & Moderator
User avatar

Joined: Mon Oct 21, 2002 11:08 am
Posts: 14260
Location: Blacksburg, VA
Car Model*:
1.74" is stock. 2.2L pistons are around 1.59" and Wisecos are 1.60 or 1.61". Last two are from memory, but I am pretty sure.

What is your head volume? Smallest I have made/used (milling and "proud" valve heads) was 30 cc. Not hard to make 33-36 cc's.

Lou

_________________
"You mean you still have a Slant 6 in that thing?"


Top
   
PostPosted: Tue Jan 21, 2020 6:45 pm 
Offline
Supercharged
User avatar

Joined: Sat Nov 27, 2004 8:03 pm
Posts: 5714
Location: IRWIN PA
Car Model*:
Well i am just kicking some Ideas around.

I like the lighter rods and pistons.
However for the heads I have available (done correctly with massive valvrs) they are probably milled too much to be practical in a 198/225 block with the 225 crank and long rods. I need to do some calculations for sure. Just trying not to build a new head.

I could always go with hyperteutic's as well.

A 2.2 flat top piston 1.594 comp. Height on molnar rods might work as well. My calc's on a stock 225 crank /block put the piston about ~0.060" in the hole with a 45cc head might be streetable for the green dart!
Probably available in 88, 88.5, 89mm ø!

Greg

_________________
Greg Ondayko
http://www.youtube.com/hyperpack
Image


Top
   
PostPosted: Wed Jan 22, 2020 2:52 am 
Offline
Board Sponsor

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 6412
Location: Waynesboro, Pa.
Car Model*: 65 Valiant 2Dr Post
The MLS head gaskets that Ryan had made were available in any thickness you want, That would help lower compression on a head that has been milled a lot or too much..

_________________
2 Mopars come with Spark plug tubes. One is a highly refined, world class, racing machine. The other is a 426 CI. boat anchor!
Image
Image


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 20 posts ]  Go to page 1 2 Next

All times are UTC-07:00


Who is online

Users browsing this forum: No registered users and 4 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