Evo Upgrade Path Warning Options

[Kazz5]

Apparently it's important to replace the stock Evo 8 (not IX) fuel pump with the Walbro 255 if increasing the Evo's boost beyond stock levels (18-19 peak psi).

Al from Dynoflash will not sell you a flash if you're implementing an MBC/EBC unless you have one installed.

*Shrug*

Dunno all the tech details but it's being implied it helps prevent small-percentage of massive engine failures ...

Just an FYI as I got raped for questioning it at EvoM since I'd not heard anything about it yet ...

Thank you, that is all, back to feasting on V-8s...

[Booztd 3]

It was my understanding that its not necessary over 18-19 psi , however...the reason people recommend it is because eventually you will make it to that level and its cheaper to have it installed and have Al do the flash WITH the fuel pump, rather than having to upgrade your ecu, then upgrade it again when you get the flash....

[Kazz5]

You don't understand. I got raped on EvoM for replying to a noob's post asking what he should upgrade first and said someone else's recommendation to get a fuel pump was bogus - that it wasn't needed until a turbo upgrade happened.

I got so raped about it they deleted my post. Believe that? Li'l ole me - a problem child.

Shit - I haven't had anything like that happen on any board around here and I certainly speak my mind more here than there ... odd.

Thought I'd pass it on so that nobody from DSMCentral could be considered an "ignoramus" or be "assinine" ...

[Kazz5]

When I did everything else - remember I drove around with just a flash, then just an exhaust and flash for 40,000 miles! Then the big bang ... FP was part of that, to be sure.

[akamiami]

kazz, don't worry. evom is full of 'tards, present company excluded, of course. it is good for entertainment however.

fwiw, I don't think your comment about the FP was out of line at all. It's not nearly the problem it is on DSMs. The main reason why it's such a go-to mod on the evo is the low price and evo's seem to have even less problem with fuel overrun than dsm's due to the voltage control on the pump.

[Kazz5]

I should really start another thread, however, some are now recommending rod bolts early-on also. I'm sure this is part of the fear-mongering and hand-wringing of those afraid of blowing up their engines - but sometimes that's a healthy fear.

Anyone have any thoughts on when and why to upgrade rod-bolts? How rowdy of a job is it?

[Kazz5]

There's also a sometimes-hilarious thread over there about "You know you know an Evo when..."

[akamiami]

I remember when I first joined that site 2 years ago I marveled at how many were recommending rod bolts anytime the rev limit was increased.

The alternative to that are the engine builders who often swear that the rods need to be re-machined when new arp bolts are pressed in as necessary. They claim that when you press in the new bolts properly and fully, the force distorts the 'true round' of the rod end which holds the bearing. I voiced this concern to one of the vendors who was adamant that it was necessary. This was in a thread where the vendor had described literally dropping the oil pan of an evo on the dyno, tapping out the old rod bolts, and torqueing new ones in with no other work performed. I was amazed. The answer I got to my question was that it's a split decision whether the rods really need to be machined or not so they do it and haven't 'seen' a problem yet. I just wonder what the rod bearings look like on those guys' cars 30K later compared to mine which was never f-ed with in the first place.

I'll take my chances on my stock equipment. Plenty of guys have no problem putting power down on a completely stock bottom end for me to ever loose sleep about it. Aftermarket rods, when they are used, typically have the ARP hardware already.

I think rod bolts falls into the 'if it isn't broke don't fix it' category. Engine rebuild time, no question, go with the good stuff. But, until then, don't lose sleep.

[awd4kicks]

I have no input on EVOM or the EVO's fuel or rev capabilities.

As far as rod bolts are concerned I agree with Kris, I would lean on the conservative side and have the rods resized and trued-up after the new bolts are installed. At the same time I wouldn't bother with this until it's time to rebuild or build-up a new engine.

[Kazz5]

Thanks guys.