It's too bad. Supposedly it fits under the stock cobra hood.Yup, that's the one. Of course it won't fit below the hood. He'll need a cowl hood for clearance. Sorry I didn't mention the obvious.
Engine issues
- Thread starter driller
- Start date
mlschultz
Boost King
Sorry to see this, but glad you finally solved the puzzle and can move on now, JP.
I second the valve and piston interference marks are missing. Best I can see in a pic anyway. I think the missing pieces by the valve relieves would be from detonation or over heating, piston melt down. Need more information obviously. Looks like you caught it time before you got a big unrecoverable mess. Interesting that spite the missing pieces of piston you don't see any dings in the top of the piston from them floating around.
driller
El Presidente
The secondary chain that broke was on the passenger side (1-4), that's where the piston to valve interference would be. The pics were cylinders 6 & 7. Kind of immaterial at this point since obviously we will need new pistons anyways.
I didn't have time to call the shop today to see what progress was made.
I didn't have time to call the shop today to see what progress was made.
driller
El Presidente
I stopped by the shop today and inspected the tear down.
The block looks good and will probably just get a light hone.
New pistons, rings and bearings (just because) will be ordered. We decided to stay with the 4V flat top Diamond pistons for high compression.
Heads will be taken to Fox Lake for final inspection along with new valves and valve guides as needed. Crank looks good, the plan is to simply polish the journals. Rods and wrist pins were fine.
The build will remain the same except we will be using Accufab secondary sprockets, tensioners and heavy duty chains to beef up the camshaft drive components for the big lift cams.
The block looks good and will probably just get a light hone.
New pistons, rings and bearings (just because) will be ordered. We decided to stay with the 4V flat top Diamond pistons for high compression.
Heads will be taken to Fox Lake for final inspection along with new valves and valve guides as needed. Crank looks good, the plan is to simply polish the journals. Rods and wrist pins were fine.
The build will remain the same except we will be using Accufab secondary sprockets, tensioners and heavy duty chains to beef up the camshaft drive components for the big lift cams.
KStromberg
Vortech kicked in yo
Back in the game soon. Good to hear John. I can't wait to see the Blue Flame in all her glory again. Always a fun, feisty car to watch.
driller
El Presidente
Talked to some guy named Tim today...
Hogan that is.
I'm seriously considering converting to E85 fuel. Let's be honest, the Blue Flame is rarely street driven, so why not? I can get E85 at a local distributor in town. If need be I can have multiple tunes, one for pump gas and one for corn fuel. :love-it:
The only downside is replacing the fuel pump and getting bigger injectors. Probably wouldn't be a bad idea to replace the fuel lines while I'm at it.
Hogan that is.
I'm seriously considering converting to E85 fuel. Let's be honest, the Blue Flame is rarely street driven, so why not? I can get E85 at a local distributor in town. If need be I can have multiple tunes, one for pump gas and one for corn fuel. :love-it:
The only downside is replacing the fuel pump and getting bigger injectors. Probably wouldn't be a bad idea to replace the fuel lines while I'm at it.
mlschultz
Boost King
Talked to some guy named Tim today...
View attachment 11961
Hogan that is.
I'm seriously considering converting to E85 fuel. Let's be honest, the Blue Flame is rarely street driven, so why not? I can get E85 at a local distributor in town. If need be I can have multiple tunes, one for pump gas and one for corn fuel. :love-it:
The only downside is replacing the fuel pump and getting bigger injectors. Probably wouldn't be a bad idea to replace the fuel lines while I'm at it.
Very cool JP! :thumbsup: I suggest, if you haven't already, go over to MercuryMarauder.net and read user "MOTOWN" thread titled "The madness continues!!!! http://mercurymarauder.net/forums/showthread.php?t=79427&highlight=hogan&page=14
I have been following along his build for a couple years now, and it might give you some insight on what you might encounter with having this intake made. I think Lidio is way deep into tuning corn powered motors, and might be a great resource. Good Luck!
driller
El Presidente
My reasoning behind the Hogan manifold is that I have as of late come to believe the 4.6L manifold is simply not enough for the 5.3L displacement especially considering the higher rpms over "stock". I can arguably presume the same for the Cobra intake alternative. So rather than go through the rebuild process and arrive at the same conclusions, I figure it best to just dive in with both feet and eliminate any suspect bottlenecks.
Besides all that, it just looks cool!
As far as the E85 decision, it is purely the simplest way to maximize the potential of the high compression naturally aspirated build. It will need to be tuned anyways, so subbing corn for gas is just a few keystrokes away.
I am left to ponder the sizing of the fuel injectors. Previously, I had calculated 39# injectors to be sufficient for the combo and I went with 42# injectors. It has been a long while since I looked, but I remember the duty cycle of the injectors to be in the 80% range.
The typical sizing factor for E85 is 1.47 times that for gasoline. The conclusion is 60# injectors should now be sufficient. The question then becomes whether to upsize from that and go with 80# injectors. The jump from 60 to 80 is significantly more than the jump from 39 to 42.
Besides all that, it just looks cool!
As far as the E85 decision, it is purely the simplest way to maximize the potential of the high compression naturally aspirated build. It will need to be tuned anyways, so subbing corn for gas is just a few keystrokes away.
I am left to ponder the sizing of the fuel injectors. Previously, I had calculated 39# injectors to be sufficient for the combo and I went with 42# injectors. It has been a long while since I looked, but I remember the duty cycle of the injectors to be in the 80% range.
The typical sizing factor for E85 is 1.47 times that for gasoline. The conclusion is 60# injectors should now be sufficient. The question then becomes whether to upsize from that and go with 80# injectors. The jump from 60 to 80 is significantly more than the jump from 39 to 42.
mlschultz
Boost King
If you can squeeze 800+ na hp from a 12:1 358 ci nascar engine with e15 and a 830 cfm carburetor, I can see where your going with this JP. In my opinion, it would not surprise me 60's would not be enough to support that kind of hp. The Mark has 60's in it now, and they are almost tapped out at 500.