1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Vitara's and a d15b

Discussion in 'Engine Building' started by stuntstere, Jul 4, 2008.

  1. stuntstere

    stuntstere Member

    Messages:
    97
    Likes Received:
    0
    Joined:
    Jun 5, 2004
    Hey guys i have a D15B jdm vtec i recently rebuilt.. ported head, supertech valve springs and retainers, crower stage 2 cam, y8 aem cam gear, arp rod and head bolts, and basic bolt ons tuned on crome... and this is what happened after my retainer broke and i dropped a valve....

    Now i am going to rebuild with eagle rods a vitara's if i can. the only thing i was wondering if i will run into any problems with them.

    P08-dome(-4.5 cc), compression height(27.4 mm), piston to deck height (-0.016)
    vitara- (-15 cc) (28.3 mm) (-0.052)
    I used the calc from zealautowerks.com for the specs.. I guess my question is will i have any compression height issues with the vitara pistons?

    Thanks for the help
     

    Attached Files:

  2. Luis998

    Luis998 Honda Enthusiast

    Messages:
    2,867
    Likes Received:
    55
    Joined:
    Jan 14, 2008
    Location:
    Orlando, Florida
    Yes. Your compression will drop to I believe 7:8 or somewhere around there with any other type of rod besides FJT's custom i-Beams, which actually bring up your compression to 8:8. I've read a lot of articles about Vitara's and I got the information straight from FJT's posts in other sites. Here is the link to the site...FJ Distributors

    This next link shows the thread started in TurboD16.com that talks about the custom i-Beams. There is a really good thread on that site that actually tells about the compression bump with the custom i-Beams, which you will be able to find. Turbo D16 • View topic - 2nd batch: Custom Forged I beam rods. Official List

    Best of luck on your rebuild and I hope that I was somewhat helpful to you. :thumbsup:
     
  3. stuntstere

    stuntstere Member

    Messages:
    97
    Likes Received:
    0
    Joined:
    Jun 5, 2004
    Thanks for the help... but correct me if i am wrong... i figured that the vitaras would stick out too far on the d15 but if i go custom with the rod and lower it won't it effectively lower the compression with it? and the rods i seen that they were selling were for the d16 and they are roughly 1.5 mm longer to get the piston up in the d16. Do they have a shorter rod for the d15?
     
  4. Luis998

    Luis998 Honda Enthusiast

    Messages:
    2,867
    Likes Received:
    55
    Joined:
    Jan 14, 2008
    Location:
    Orlando, Florida
    :doh: You know, you may have something there. haha Check around TurboD16.com for threads started by FJT. I BELIEVE he talks about D15b's somewhere in them and explains everything for you. If not, check out the site as I have only really looked for information on Z6's and Y8's.
     
  5. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    FJT actually has shorter rods for the D15B.

    You should be fine btw. CR is like 8.2
     
    1 person likes this.
  6. stuntstere

    stuntstere Member

    Messages:
    97
    Likes Received:
    0
    Joined:
    Jun 5, 2004
    thanks for the help... so do you think i would be ok with the stock rod lenght on the motor? even though the vitara's will sit slightly higher in the block?
     
  7. Luis998

    Luis998 Honda Enthusiast

    Messages:
    2,867
    Likes Received:
    55
    Joined:
    Jan 14, 2008
    Location:
    Orlando, Florida
    Thanks for the compression info, Kevin. Rep! :thumbsup: I wouldn't learn anything if others wouldn't teach it just like that. :D
     
    1 person likes this.
  8. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    They should be fine; the top of the piston goes up only about .9mm from stock, and sticks up about .55mm. The stock headgasket is about 1mm thick; plus there's extra volume in the combustion chamber(vs. a Y8 head that has the quench pads).

    BTW, I'm working on a build that has the pistons sitting much higher(roughly .9mm above deck...flat top pistons) Don't know if it'll work yet. :)
     
    1 person likes this.
  9. stuntstere

    stuntstere Member

    Messages:
    97
    Likes Received:
    0
    Joined:
    Jun 5, 2004
    Alright thanks... i wasn't for sure if that little bit would create any problems...
     
Verification:
Draft saved Draft deleted

Share This Page