Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by: KPower

crank offset grind?

Thread Tools
 
Search this Thread
 
Old 04-06-2011, 03:13 PM
  #1  
I'm Miserable!
Thread Starter
 
Techsalvager's Avatar
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,866
Total Cats: 0
Default crank offset grind?

Anyone ever offset grind a crank to get more stroke, if so how much stroke were you able to add or limits did you go to?
Techsalvager is offline  
Old 04-06-2011, 05:39 PM
  #2  
Junior Member
iTrader: (4)
 
Alta_Racer's Avatar
 
Join Date: Oct 2006
Location: Alberta Canada
Posts: 228
Total Cats: 7
Default

Depends on what bearing sizes are available as to how far you can go. Pick a top notch crank grinder, that can properly index the crank, and get the radius correct. Be aware the pistons already stand a little proud of the deck.

I have been thinking along the same lines for my next build. I look forward to some good info on this thread, and hope it stays on topic.
Alta_Racer is offline  
Old 04-06-2011, 06:24 PM
  #3  
I'm Miserable!
Thread Starter
 
Techsalvager's Avatar
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,866
Total Cats: 0
Default

so the pistons come out of the block a tad?
stock motor
Techsalvager is offline  
Old 04-07-2011, 12:32 AM
  #4  
Junior Member
iTrader: (4)
 
Alta_Racer's Avatar
 
Join Date: Oct 2006
Location: Alberta Canada
Posts: 228
Total Cats: 7
Default

iirc mine were .015-.020 out of the block, stock shortblock. I am also running a .035 head gasket. There is room for more stroke.
Alta_Racer is offline  
Old 04-07-2011, 01:15 AM
  #5  
Elite Member
iTrader: (24)
 
Bryce's Avatar
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,759
Total Cats: 35
Default

My 2 liter engine has an offset grind on the crank, with Honda Pistons and rods.
These are the pistons http://www.jepistons.com/Products/185918.aspx
I'm not sure of the rods. Sadly I don't have any more details about the engine other than the rods are made by pauter.
If anybody wants to, they could probably get the details from Ric Stevens in TX.
Bryce is offline  
Old 04-07-2011, 01:30 AM
  #6  
Elite Member
iTrader: (2)
 
BenR's Avatar
 
Join Date: Jun 2006
Location: ABQ, NM
Posts: 1,838
Total Cats: -7
Default

One of the things I plan for my next B6 build is to see what the limits of the machining are for that block. I hope to start it sometime this year.
BenR is offline  
Old 04-07-2011, 08:28 AM
  #7  
Elite Member
iTrader: (11)
 
elesjuan's Avatar
 
Join Date: Jun 2007
Location: Overland Park, Kansas
Posts: 5,360
Total Cats: 43
Default

Is anyone else just absolutely floored at the cost of pistons for these motors??

We ordered a set of forged pistons couple years ago for a small block chevy build (8, to be exact) for under $500.00!
elesjuan is offline  
Old 04-07-2011, 09:31 AM
  #8  
Elite Member
iTrader: (2)
 
BenR's Avatar
 
Join Date: Jun 2006
Location: ABQ, NM
Posts: 1,838
Total Cats: -7
Default

Originally Posted by elesjuan
Is anyone else just absolutely floored at the cost of pistons for these motors??

We ordered a set of forged pistons couple years ago for a small block chevy build (8, to be exact) for under $500.00!

You realize you're comparing the cost of parts for the most commonly built motor vs one that's probably gets a couple hundred builds a year if that.
BenR is offline  
Old 04-07-2011, 09:34 AM
  #9  
I'm Miserable!
Thread Starter
 
Techsalvager's Avatar
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,866
Total Cats: 0
Default

Originally Posted by Bryce
My 2 liter engine has an offset grind on the crank, with Honda Pistons and rods.
These are the pistons http://www.jepistons.com/Products/185918.aspx
I'm not sure of the rods. Sadly I don't have any more details about the engine other than the rods are made by pauter.
If anybody wants to, they could probably get the details from Ric Stevens in TX.
do you know off hand if they were custom made rods or a set of OEM\aftermarket premade rods?
Techsalvager is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Quinn
Cars for sale/trade
6
10-23-2016 07:58 AM
Frank_and_Beans
Supercharger Discussion
13
09-12-2016 08:17 PM
Vtpalom1
Miata parts for sale/trade
4
09-28-2015 11:05 PM
Greasyman
General Miata Chat
2
09-28-2015 10:44 AM



Quick Reply: crank offset grind?



All times are GMT -4. The time now is 08:47 PM.