Ford Bronco Forum - Reply to Topic
Thread: 300-6 performance engine build Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 
   

Register Now



In order to be able to post messages on the Ford Bronco Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself. DO NOT USE Gmail.com accounts. If you only have a Gmail.com email please contact the administrator here

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
05-07-2019 05:06 PM
AbandonedBronco It better be nice and clean, you only have a couple miles on it.


But yes, I love getting compliments on the Bronco and the 300. Old mechanics especially seem to glow over that engine.

Then, you run into the occasional guy who says, "I didn't know they put six cylinders into something as big as a Bronco, what in the world would you want that for?"

Yeah... you don't know nuthin'
05-07-2019 05:04 PM
BigBlue 94 So if you've read elsewhere on FSB, I'm stuck at a shop, getting a new spindle put on. They are finally bleeding the brakes, so it shouldn't be too long.

Mechanic said it was the cleanest, nicest 300 he's ever seen! Dont that make a guy feel all warm inside lol
04-28-2019 05:00 AM
BikerPepe` If you check in before you split... happy trails bud and don't forget yer camera!
04-27-2019 10:35 PM
445 FE Bronco I got half a tank of gas, half a pack of smokes, itís dark and we are wearing sunglasses, hit it.
04-27-2019 09:15 PM
BigBlue 94 Drove up to the reservation to get a carton of cigs for the trip, and didnt hear a single ticking noise! That put about 12 miles on the fresh oil and fluids. All seems well. Got all my gear loaded up. Just gotta pack some clothes and personal items and fill up the cooler.
04-27-2019 08:46 PM
445 FE Bronco Nice, sounds like you could easy smoke even a modded V8. I love sleepers SURPRISE!
04-27-2019 05:57 PM
BigBlue 94 Got the oil changed, 6 qts of Castrol GTX 10w30 dino juice with a $20 bottle of Lucas ZDDP additive. Got the transmission drained and refilled, as well as the transfer case. Also swapped back to the open valve cover to tighten those noisy rockers. Two of them were pretty loose and two barely loose. Oddly, I could tell which ones were loose by the heavier splashing of oil out the pushrod hole. Got em quieted down real nice.

CB works, and I got a USB charger wired in.

Pretty well ready to roll out in the morning for Moab.
04-27-2019 09:49 AM
BigBlue 94 I've actually had good luck with radial swampers lasting. The SSRs wore really well. Better than the original Wrangler MTRs.

One day left before the journey begins!
04-26-2019 10:20 PM
SRWillis
Quote:
Originally Posted by AbandonedBronco View Post
I'd hate to be replacing 37" tires every 2 - 3 years.
Quote:
Originally Posted by BigBlue 94 View Post
...as soon as I hit the gravel, the wheels broke loose, i shifted into third, and they were still spinning at 55mph uphill!
Sounds like you'll be replacing them about every 2-3 weeks!

Glad she's runnin' good!

Lookin' good too!
04-26-2019 11:35 AM
BigBlue 94
Quote:
Originally Posted by AbandonedBronco View Post
Very cool looking Bronco! I dig the color, stance, and tires you have on it.
I never have plans lift mine, but that's mostly monetary, since as a daily driver, I'd hate to be replacing 37" tires every 2 - 3 years.
But that doesn't mean I don't think about it from time to time.

I bet with the mods you've done, you are putting out more hp/tq than a stock 351, and at lower RPM. It'll move alright.
Thanks!

Yeah, when the secondaries open, it feels more powerful than my 'built' efi 351. Lol, as I crossed the highway I goosed it, and as soon as I hit the gravel, the wheels broke loose, i shifted into third, and they were still spinning at 55mph uphill!
04-26-2019 11:18 AM
AbandonedBronco Very cool looking Bronco! I dig the color, stance, and tires you have on it.
I never have plans lift mine, but that's mostly monetary, since as a daily driver, I'd hate to be replacing 37" tires every 2 - 3 years.
But that doesn't mean I don't think about it from time to time.

I bet with the mods you've done, you are putting out more hp/tq than a stock 351, and at lower RPM. It'll move alright.
04-25-2019 10:38 PM
BigBlue 94 Yeah it's almost sounds like an early powerstroke clack. It kinda goes away if I goose it.

The six isn't for everyone, but neither is a diesel or a turbo four banger. I think anyone would be impressed with the torque it.
04-25-2019 07:41 PM
TS 90F150 It looks good. While a "6" isn't my cup of tea, it is cool as hell that you did all the modding to it to make it "jump". Love it.

I agree with Abandoned Bronco above about the roller tip rockers making a sound, especially with a "stock" rocker cover. I will kind of disagree that is or becomes a cool sound, but you will get used to it if that is what you are hearing. Ask me how I know. lol I'll let you know if the "thicker" Ford Racing covers muffle the sound any, once I get them installed. My Cobra has (supposedly) different covers from the factory to muffle the sound. It must work.

tim
04-25-2019 06:01 PM
BigBlue 94 Got about 85 miles on it so far. Drove over to the county line mud road and did some granny gear deceleration down a couple hills. Opened her up getting back across the highway and the secondaries opened and oh my! Power galore!

Still cant tell if I've got an exhaust leak or a loud rocker arm.

And a few full shots for @AbandonedBronco





And this may be my new favorite pic

04-25-2019 11:17 AM
BigBlue 94 Oh, and it's a 50 mile round trip to work and back, plus about 15 at lunch. Trying to think of a good tall hill to use, that isn't on the highway lol
04-25-2019 11:06 AM
BigBlue 94 Good tip on the deceleration.

You've really never seen a full pic?! Dang I've posted quite a few here and there.

It looks great from 20 feet, but the rockers are full of bondo and some new rust bubbles have formed. Lol I hit the rocker with the engine of my weed wacker and this happened.



It has been over 15 years since it was "restored" and it's in pretty decent shape considering.
04-25-2019 10:57 AM
AbandonedBronco Looking good! I don't know if I've seen a full pic of your Bronco. It's nice and straight.

One thing to keep in mind is that the roller rockers DO clickity tick. I had to get used to that in mine. It's a cool sound once you do get used to it, but it initially sends up the alert.

Now, go out and put 50 - 100 miles a night on it so you can get it good and broken in before Moab.

One thing I did on mine that really helped. If you have any tall hills, go up to the top, put it in low range / granny, and let it engine brake the whole way down. Climb back up, getting on it a few times, and then repeat.

The engine braking will create the most amount of vacuum your engine can have (mine is usually 2 - 4hg more than idle). This extra vacuum will really seat the rings into the cylinder walls. After my break-in, I had about 175 psi in all six cylinders on a compression test.
04-25-2019 09:52 AM
BigBlue 94

04-25-2019 08:48 AM
BigBlue 94 Made it to work! Only issue is a damn ticking from the engine somewhere. Probably another exhaust leak.

No leaks, temps and pressure good. Power is good. Carb probably needs a touch of fine tuning but it's pretty decent for not knowing what I'm doing.
04-24-2019 09:24 PM
BigBlue 94 Gasket is on, and it's all buttoned back up.

I ended up welding a bead around the three thin or no gasket coverage areas on the header flange and then ground/sanded them smooth. This effectively widened the sealing area. I still have a small leak or a rocker arm that isn't quite tight enough. But it's much better!

Gonna drive it to work tomorrow for the first time since 2016!

I dropped from .035 to .030 power valve restrictors, on advice from the fordsix forum.
This thread has more than 20 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome