S197 BOSS 302 Race Car Build Thread Build Thread

[twistedneck]

I got a package from Livonia today...

That is a nice short block capable of huge rpm. sorry if I missed it are you going with the Moroso, Canton, or Ford Racing pan or another??

 

[ArizonaBOSS]

That is a nice short block capable of huge rpm. sorry if I missed it are you going with the Moroso, Canton, or Ford Racing pan or another??

I didn't post pictures of the other packages I got last week

 

[ArizonaBOSS]

Various gaskets, seals, bolts from Tousley, head changing kit and valve springs from Rehagen.

 

[VoodooBoss]

What's a safe RPM with those valve springs?

 

[ArizonaBOSS]

What's a safe RPM with those valve springs?

Good question. They are "just" the stock springs that come in the BOSS engine like I have now, but I figure since I'm in there it's a great opportunity to refresh them. That box in the pic was one I ordered a while back--that's HALF the springs. The other half I had to order recently, they are in that plastic bag.

Rev limiter on my car is set to 7800. If I ever go CJ (looking very unlikely due to current power output vs. NASA ST2 power to weight regulations) I'll probably bump to 8K.

 

[ArizonaBOSS]

Opened up the crate to inspect the goods today:









Captdistraction and I are pulling the stock engine tomorrow AM. Got a bunch of ancillary stuff out of the way already today (fan, battery, fluids drained, etc).

 

[Roadhouse]

So pretty...good luck pulling the engine!

 

[ArizonaBOSS]

It's out.



















AND A TIME-LAPSE OF THE FULL DAY OF ACTIVITIES FOR YOUR VIEWING PLEASURE:

 

[Grant 302]

Nice work...and great video! 8)

 

[superhero]

I really enjoyed that video.....Thank you
Also>>>Great Music

 

[Swiss Boss]

Awesome!

Time for long tube headers

 

[VoodooBoss]

Cool video. Nice of Chris to show up in time to eat your pizza. ;D Hopefully he brought them! Is that Chris's ST?

 

[ArizonaBOSS]

Thanks guys

Going with stock manifolds still, more power isn't helpful in my race class. But yes, this would absolutely be the perfect opportunity to put LTs on.

Yep--Chris' car is an ST, he just got it that same day! Pizzas were on me.

 

[302 Hi Pro]

Arizona:

Too cool, great video, and music. Good luck with your short block build. Will you replace the idler pulleys at this time?

 

[Berol]

Making good progress. Good luck with the whole build.

 

[ArizonaBOSS]

Wasn't planning to replace any pullies, they all spin quite freely still.

Wow getting those head bolts off was scary. Had to use a breaker bar w/ a jack handle cheater bar. They all came out clean, though.

More pics later, gotta find dinner.

 

[VoodooBoss]

You're making good progress. Remind us again what's wrong with the engine if you know.

 

[ArizonaBOSS]

Won't know for certain until we tear the stock short block down, but I'm thinking rings are toast. And that's just because I'm stupid and thought that 91 + Torco additive was as good as 100.

 

[ArizonaBOSS]

Sent the heads out for a hot-tank cleaning this morning. Should get them back tomorrow and then I can start (preventively) swapping out the valve springs for a fresh set of factory B302 springs.

Ordered new primary timing chains today as a couple links didn't move super freely on the stock ones.

I should be able to start putting this thing back together soon. This was all pretty intimidating going in but it's a lot better now.

Here are some more pictures:

Passenger Side Cylinder Head:


Driver's Side Cylinder Head:


Closeup of #8 Cylinder; detonation was eating the side of the piston.


Comparison of #4 and #8 Pistons (two rearmost pistons in block, opposite banks). Note the anti-friction coating rubbed away on 8, along with most of the factory machining marks. Also the ring gaps on 8 were nearly overlapping, which probably wasn't helping the oil in the combustion chamber issues.

 

[steveespo]

Drew
Glad you caught it before damaging the heads. When they clean up the cylinder heads make sure to check the valves for sealing too. No sense in putting it all together and finding out a valve job was needed. Great job on the teardown.