vt built block break in

ADRENLN · Aug 30, 2006

or any build block for that matter. im just trying to figure out how to do this. as some of you know i will be trying for the block and blower somtime in the middle of next year.

anyway, i was wondering hoe to break in a forged short block. i was planning on doing the engine and blower at the same time, but how the heck am i gonna dyno tune for the blower on a fresh block?

should i put the block in first break it in for a while and then go back for the blower and the tune?

also what is required for break in of a built block, is it the same as a regular engine? just a certain amount of miles and stay under a certain speed?

thanks!

Black'02 · Aug 30, 2006

There is a little section about break in procedures on vt's website, www.vtengines.com. Just go to the main site and click on technical info tab at the top of the page and there is a small page about break in. I would assume breakin would be the same for a shortblock. I believe the breakin procedures are done mainly for the engine internals anyway, to make sure everything gets seated correctly.

stangGT97 · Aug 30, 2006

I would do what TweekedGT did when he installed his shortblock - break it in w/o the blower, then when the time comes, install the blower and get tuned. Here is the break in process from VT's website

VT Engines website said:
Add non-synthetic 5W30 to engine. Upon start up, allow engine to run at 2000 rpm for 2 minutes to allow valvetrain components to fully pump up. Have another person watching the gauges, specifically oil pressure. After the 2 minutes is up, allow engine to idle until it comes to operating temperature. Drive vehicle for a short 10-15 mile cruise to allow load on engine. Do not take motor past 3500rpm. Once back at the shop, drain oil and replace filter, again with non-synthetic 5W30. Put 500 miles on this round of oil, gradually taking engine higher in the rpm band, as miles are put on odometer. At 500 miles, again drain oil and replace filter. Add non-synthetic 5W30 and drive vehicle for another 500 miles. At this time, if you prefer to run Synthetic oils, you may add them now (1000miles). This has given the rings ample time to seat into the cylinder properly. We recommend Mobile1 5W30 synthetic (or a comparable quality) for use in any VT Competition Engine Development motor.

nwapache · Aug 30, 2006

I wouldn't recommend installing the blower with the engine. The added stress on the internals would not be good for proper sealing, not to mention the tuning issues. I suppose you could install it, and just stay out of boost during the break in period, but that would be pretty difficult!

ADRENLN · Aug 30, 2006

thanks guys, that is what i was planning on doing i guess. i wounder what all the guys that have the blowers already on their cars do when they get a built shortblock? it always seems like they just throw in the built block and throw the blower back on and drive away.

i guess there is a down time between the 2 that no one really talks about!

ProCharger GT · Aug 30, 2006

putting the blower on a new block isn't gonna hurt it whatsoever. just don't go into boost until it's broken in.

ADRENLN · Aug 30, 2006

well i assume that the blower will have be tuned in order for it to run correctly with all my mods. also wouldnt the lower compression of the new block effect my current tune? no way of avoiding that though, ill just have to take it easy.

so in order to tune for the blower it will be run high in the rpms. so i will have to install them seperatly.

Cantslowdown · Aug 30, 2006

well when we had a lighting in for a blown motor we put it all back as one..So i would think you could almost do it the same way...Just stay out of the bost..

tomustang · Aug 31, 2006

just bug jim or scott on the phone about it, they should've told you the break in procedure when you got your block

DropTopPony · Aug 31, 2006

tomustang said:
just bug jim or scott on the phone about it, they should've told you the break in procedure when you got your block

he doesn't have it yet...he's just stressing already

Where have you been? Working lots of OT?

ADRENLN · Aug 31, 2006

thanks guys, yea im just getting mentally prepaired for this procedure

ADRENLN · Aug 31, 2006

i feel like i need to know a little bit about what the heck im doing before i blow this kind of cash

vt built block break in

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