De-Stroke EB - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 01-03-04, 09:46 PM Thread Starter
Registered User
 
Join Date: Nov 2003
Posts: 81
biggrin De-Stroke EB

Tis me again with another idea in the pursuit of power, I got an EBII I6, and was thinking since these things cut out at 5500rpm, due to the stroke of the engine being at or close to capacity, wat if i were to de-stroke it to lets say 3.5L, and then bore out the block (making it close to 4L again) which would help in revving, if anyone has any info on this you rock. Thank you
Adzi is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 01-03-04, 11:14 PM
Often has bolts left over
 
barry_v's Avatar
 
Join Date: May 2003
Location: Adelaide
Age: 30
Posts: 848
Re: De-Stroke EB

well you'd have a bit of trouble locating a destroker kit of that size methinks. you could get the crank and rods from an early 88 EA, there was an 3.2l option.

1992 DC LTD 5.0
Duel exhaust, Genie extractors, Ported E7 heads, ported lower HO inlet, 70mm maf, Underdrive Pullies
barry_v is offline  
post #3 of 10 (permalink) Old 01-03-04, 11:20 PM
Ford Member
 
Join Date: Jul 2003
Location: Robina
Age: 33
Posts: 364
Re: De-Stroke EB

Depending on how far you could over-bore the block, wouldnt it be better to leave the stroke and increase the bore for a more square engine? GM destroyer?

Pete
fordmuscle_83 is offline  
post #4 of 10 (permalink) Old 01-04-04, 12:37 AM Thread Starter
Registered User
 
Join Date: Nov 2003
Posts: 81
Re: De-Stroke EB

Its not that I dont want more capacity I'd Love to have lets say a 5L I6 but I also want to be able to rev it to around 6-7Grand
Adzi is offline  
post #5 of 10 (permalink) Old 01-04-04, 01:01 AM
Ford Member
 
Join Date: Jul 2003
Location: Robina
Age: 33
Posts: 364
Re: De-Stroke EB

That would help it rev out.
fordmuscle_83 is offline  
post #6 of 10 (permalink) Old 01-04-04, 01:26 AM
100 SPEED LIMITED SILVAEA
 
gm dstroya's Avatar
 
Join Date: Nov 2002
Location: gold coast and off playing with 32psi of boost pumping into 4.1lt of pure ohc feralness and developing a 350hp n/a kit for ea-au i6, also making 5.0lt gear soon enuf
Posts: 1,043
Re: De-Stroke EB

the main issue with revving is the rod/stroke ratio.

you would have to deffinatly run an au bottom end with some commondore eco tech piston due to the high pin height (also look into toyota torago pistons)

nissin blubird rods are 6.2 inches long, these will help a lot. but going for 6.5 inch rods as a minimum would be best.

i'll have a little look round and get back to you lot with it.

as i am oing either for a 5800rpm 4.4lt stroker or a 4.0lt that will rev to 7000rpm,

cheers.joe.

live in S.E. queensland? bit of a revhead? click here!!--> speedphreaks

1000hp is underway. rods,pistons here!! t88 on its way!!
gm dstroya is offline  
post #7 of 10 (permalink) Old 01-04-04, 02:14 AM
Ford Member
 
Join Date: Jul 2003
Location: Robina
Age: 33
Posts: 364
Re: De-Stroke EB

Isnt ratio is determined by bore and stroke?
fordmuscle_83 is offline  
post #8 of 10 (permalink) Old 01-04-04, 03:30 AM
Looking in YOUR bathroom.
 
Join Date: May 2002
Location: Adelaide
Age: 32
Posts: 3,287
Re: De-Stroke EB

the important ratio is Stroke to Rod ratio

Ive been described as a vault of usless random knowledge.

Ill take it as a complement i think.............
Walkinshaw is offline  
post #9 of 10 (permalink) Old 01-04-04, 06:23 AM
Proud Ford Owner
 
Mike Gayner's Avatar
 
Join Date: Jul 2003
Location: New Zealand
Posts: 799
Re: De-Stroke EB

Just wondering if that would really give you that much more power....

As most people know, an effective launch and good power come from large amounts of torque, especially in such heavy cars as Falcons. Decreasing your stroke will bring your torque down considerably.
Mike Gayner is offline  
post #10 of 10 (permalink) Old 01-04-04, 07:25 PM
Birth, Drift, Death...
 
Rollin's Avatar
 
Join Date: Jun 2002
Location: Drifting Brisbane...
Age: 33
Posts: 3,039
Re: De-Stroke EB

if you are going to all that trouble to try and engineer stuff to fit to change the stroke of your engine (and you cant bore them that much as the cylinders are too close togather) just get a bloody turbo!

all these things you are considering -- get a complete AU motor form a wreckers with like 40,000km on it (you can get them for $850 up here, for everything between the sump and rocker cover inclusive)

an AU motor will rev to 6k no worries, and then source a few second hand parts (turbo, cooler etc) turbo the car.

with the right turbo and enough fuel you will pull 250kw at the wheels no worries, for less than 8k in total, and it will even look pretty as well.

a stock rebuild on a EB costs about 2k to start with, so with a AU motor you are already 1250 bucks ahead, and the motor is far stronger and revs harder as well.

Slick, Quick and Fulliii SIK!!!
Proud TQE Operator

197.4hp at the wheels, 14.505@152.46km/h
Tuning in progress...
*CLICK TO SEE MY XR6*
I can get new Genuine Holden/Ford/Audi/Land Rover/Honda parts cheap, PM me!
Rollin is offline  
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Inline 6 Tech
Gear in this thread - Powered by O'Reilly Auto Parts


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
EB backend onto an EA. AUII_Forte General Tech 9 01-06-06 04:18 AM
Ea or EB blinkAU General Tech 5 06-04-03 09:01 AM
Ford's experiences problems with new diesel; 6.0 Power Stroke is important test Stacy94PGT Diesel Tech 0 03-04-03 06:32 AM
2003 Ford F-350 Power Stroke Stacy94PGT Ford Worldwide News 1 11-04-02 03:31 PM
Super Duty's Improved Power Stroke Diesel Produces Best-in-class Torque LunaticSVT Diesel Tech 0 03-22-02 10:31 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome