Project Unopenned Ba

[Stazza_Brendan]

Factory oil filter and factory oil

[mic]

hahaha !!!

[icer]

LOL @ not open bonnet. What if I drop the motor from under the car and modify it? haha (with the cross member etc)

Anyway BA motor with stock bottom end is just as good as unoppend as the weak points are the oil pump gears (manual) and the rods. Get to 400rwkw without changing those and make it last...now that's an accomplishment.

[South]

Unopened means using the factory specified parts for your engine as it rolled off the floor. So FPV valve springs in an XR6 is opened, the later model XR6 valve springs in an early model XR6 is opened. Later model BF bottom end in a BA is opened, etc etc.

It's the same as adding another 100hp using a different shootout mode on the dyno, it's just not cricket!

That's my opinion anyway...

[Trough Lolly]

id say a spring change only for "un-opened" category is as far as it would go without a stupid forum debate, at the end of the day, a spring change doesnt add kw's, it just for safety.

If it had cams/porting you would never hear the end of it.

[r32dan]

When shopping for my xr6t, I test drove a red 03 BA here on the Gold Coast that had supposidly seen 400rwkw unopened. No valve springs, Stock cooler!

Although it had a water spray set up, and was running on av-gas at the time. Apparently it was a one off run for power cruise some years ago. It was owned by someone from Dyson performance (that are no longer in existance) and it was one of the first xrt's on the gold coast to be reasonably modified. Perhaps someone on here knows of this car and could shed some light on wether there is any truth in this?

Anyway, even more interesting was that it was more or less modified from a very early stage in its life, and has now got 150,000k's on the clock so the old unopened BA motor has done alot of K's under pretty tough conditions regardless of what power it has, or hasn't had. When I drove it, it had been detuned to god knows what before being sold to the current owner, but it was off its tits to drive, didn't blow smoke, and the engine sounded tight.....BUT....I just couldnt bring myself to take the risk of being the bloke who it finnally blows up for.

[xr6t_ute]

Unopened always opens a discussion which turns into an argument

Unopened rules seem to change depending on what type of vehicle we are talking about and which forum you visit.

LS1 guys consider unopened to include allowing valve spring changes

Unopened on the FF means unopened - nothing opened or changed internally at all

I thought unopened on this forum allowed a spring change

This is the first time I have heard unopened means just stock bottom end,

I always thought unopened was valve spring changes too..... and I believe it has been the case on here, dont know where cams and headwork came from..lol

[mic]

When shopping for my xr6t, I test drove a red 03 BA here on the Gold Coast that had supposidly seen 400rwkw unopened. No valve springs, Stock cooler!

Although it had a water spray set up, and was running on av-gas at the time. Apparently it was a one off run for power cruise some years ago. It was owned by someone from Dyson performance (that are no longer in existance) and it was one of the first xrt's on the gold coast to be reasonably modified. Perhaps someone on here knows of this car and could shed some light on wether there is any truth in this?

Anyway, even more interesting was that it was more or less modified from a very early stage in its life, and has now got 150,000k's on the clock so the old unopened BA motor has done alot of K's under pretty tough conditions regardless of what power it has, or hasn't had. When I drove it, it had been detuned to god knows what before being sold to the current owner, but it was off its tits to drive, didn't blow smoke, and the engine sounded tight.....BUT....I just couldnt bring myself to take the risk of being the bloke who it finnally blows up for.

haha u done the right thing not buying that !! u could never get 400kw from a stock cooler and have the bottom end still intact after !!

[tab]

More importantly are the valve springs BF? If so you can't really say it's a BA engine.

[icer]

in saying v/springs swap is no added power just safety, well pistons and rods fall into the same category.