Mazdaspeed Forums
Page 4 of 4 123 4
Show 100 post(s) from this thread on one page

Mazdaspeed Forums (http://www.mazdaspeedforums.org/forum/)
-   MazdaSpeed 3 - Engine, Transmission & Driveline (http://www.mazdaspeedforums.org/forum/f10/)
-   -   Rod bending observations (http://www.mazdaspeedforums.org/forum/f10/rod-bending-observations-42105/)

cpolly69 11-17-2009 06:30 PM
scientific test > feelings, thoughts, hopes and dreams and day of the week

ungrave 01-02-2010 06:45 AM
If you haven't blown, is it possible to swap out the stock rods for aftermarket ones without pulling the motor?

djuosnteisn 01-02-2010 08:08 AM
Doesn't seem to be. The timing cover and components seem to be the biggest difficulty. There's a fair amount of stuff that needs to come off the block and as i'm learning (i used to want to do it in the car like you too), it's best to just do it right, and pull the block. You should really send it to a machine shop to at least check the deck and cylinder bores and crank and stuff. Esp if your going to put in the money for upgraded internals.

06Speed6 01-03-2010 12:22 AM
You can swap pistons and rods with the engine in the car, if you have very many miles it wont run worth a shit because it wont hold a good compression and unless your very lucky it will probably vibrate very badly, but it is definitely possible if you want to do things absolutely the hardest way possible.

nyghtryder 01-03-2010 05:30 PM
You need your block machined prior to installing new parts.

cudaman 01-04-2010 08:06 PM
Quote:
Originally Posted by Lex (Post 355715)
Thanks for looking into this. This is probably a large reason as to why we're bending rods all the time and say an Evo or SRT4 are not when the rod dimensions and forging are quite similar. The fact that we have a pretty long stroke really doesn't help as it amplifies the effects of the poor geometry.

More of a reason to limit torque, low RPM load, detonation, and flat foot shifting on the stock bottom end.

EDIT: Some cars will have poorer tolerance stack up (not just the rods, but all tolerances) than others and those are more susceptible to this problem.
I agree. I have a stage3 Neon SRT-4 and an '09 MS3. Stock for stock, the MS3 is a much better car overall, BUT, the Neon SRT-4 internals and the bottom end seem to hold up much better when modded..... I may not be doing much to the MS3... don't have to...

BoostIsBetter 01-04-2010 08:40 PM
Quote:
Originally Posted by cudaman (Post 392298)
I agree. I have a stage3 Neon SRT-4 and an '09 MS3. Stock for stock, the MS3 is a much better car overall, BUT, the Neon SRT-4 internals and the bottom end seem to hold up much better when modded..... I may not be doing much to the MS3... don't have to...
that's cause your your SRT-4 bottom end is build by dodge in the same fashion they make their diesel trucks. that block is invincible! you got stage 3, what goodies on it?

clos561 01-05-2010 10:25 AM
Quote:
Originally Posted by BoostIsBetter (Post 392327)
that's cause your your SRT-4 bottom end is build by dodge in the same fashion they make their diesel trucks. that block is invincible! you got stage 3, what goodies on it?
its probably because its port vs di

nyghtryder 01-10-2010 07:17 AM
especially since dodge has never built their own diesels

SpeedSixxx 01-11-2010 04:25 PM
can we has get this thread back on track please././


All times are GMT -7. The time now is 02:13 AM.
Page 4 of 4 123 4
Show 100 post(s) from this thread on one page

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
SEO by vBSEO ©2011, Crawlability, Inc.
vB.Sponsors

©Copyright 2008 ; 2019 Cymru Internet Services LLC | FYHN™ Autosports HQ
Ad Management plugin by RedTyger

Page generated in 0.17619 seconds with 11 queries