JohnKoaWood

Whats at risk by doing a balance shaft delete?

88 N/A, daily driver 99% highway...

Clint's 944

LOL,
I think loose bolts over time and maybe the motor mounts would wear faster. If I recall, the shaking is only during lower RPM's.

krystar

oil pickup tube is the big thing.....alot of other smaller things

KuHL 951

I never under stood the reason to eliminate them other than for the ease of a TB change or on a track car that's always above 3K rpm. The parasitic drag is very little since they don't power anything. For a street car it is not a good idea at all IMO. Porsche didn't design them for the WOW factor, they actually work.

chris_v

dont do it, cracked fuel rails, loose bolts, cracked oil pickup tube... not worth it. ask me how I know.

VOoDOoGTX

i did mine and the block cracked in half

JohnKoaWood

Zis is vat I vaz loooking four...feedbak... opinionz.... input... before kaput...

FWIW, I spend MOST of my time in the cars at or above 3000, I live and work roughly 2 miles off the highway, with 70 miles of highway in between, I get on the highway in the morning, run 75-80 to work, on the highway in the afternoon, a little traffic, but usually not too much, then 75-80 all the way until I exit the highway and swing into my neighborhood... but given the potential for Fuel rail, block, other point failures induced by lack of balance shafts I will not go that route, except to diagnose the current point of failure... and if it is too serious... maybe look for a monster motor buildup to go into the car...

Damn so much for an easy balance belt delete...

When I bought the house I got it for 1/3 what the same house would cost me near my work...now it is worth more than the same house near work so I am still winning in the long run...Right?

alxdgr8

I thought the block was cracked when you bought it?...different motor?

JohnKoaWood

Trust me, I know they work..the dealer did my last first belt change and had the upper shaft 85 degrees out...lower was about 30 deg out of phase.. you could feel it... I did the last change, re-timed the balance shafts, motor runs like silk except the metal on metal whining getting louder and more annoying with RPM... OH WELL... time to troubleshoot...

Whine started, shortly after water pump started leaking.... I thought whine was water pump... NEW WP in place, whine still there and got worse on WP/TB test drive... I am thinking balance shaft bearing, oil pump, or main bearing... start with the easiest, work tword full rebuild parts... balance shaft is easier to trouble shoot and fix than mains... and oil pump is about in between...

JohnKoaWood

Lets all dogpile on the guy who said he was gonna run it till it blew up, and said this even after the motor was out and in pieces...

PLEASE don't get him started on the POS cracked motor...ONLY ask how the search for a replacement is going...

Speaking of which how IS the search going voodoo?

Rob

I just put together a 2.7l mid sleeve balance shaft delete motor. The crankshaft and flywheel was lightened, and the rotating assembly was balanced to within 1/2 a gram. I did have the pickup and return tubes fully welded at their seems and at their mating brackets. Only a small bit of seat time so far, but it's very smooth throughout the rev range. I guess time will tell.

JimV8

Think of it this way. If the factory thought it possible to keep the engine alive without a balance shaft why would they put it in.

Calmchaos

I deleted mine, but now my car falls over all the time!

Zing!

David Floyd

I think the key is, if stock internals then leave the shafts, if you have lightened the internals and done that right then you can run a delete. 75k miles and counting on my bs delete.

spoolinturbo

ya, i did a BS delete in my starion...i ended up balancing the whole rotating assy because the motor was just unstable. I asked the same question to a local porsche specialist he said "leave it, porsche knew what they were doing lol)