Ron's Monster Miata Build
- RX-7 Chris
- Posts: 7800
- Joined: Tue Oct 02, 2007 9:14
- Location: Colorado Springs
- Contact:
coloskydiver wrote:
Quick question though- You guys think that I should get my Trickflow Twisted Wedge heads ported & polished and possibly a 3 angle valve job?
Now is the time to do it and on the Mustang forum, they recommended it.
One guy though that with a 331 NA, they would flow just fine out of the box.
I don't know.
They should flow good out of box. You may not need to port them but I would do the 3 angle valve job. I had that done on my galaxie motor when I had it built and it was worth it.
Are you running a Trickflow intake? Porting the heads on that motor will not give you much unless the intake is port matched. At far as I know the trickflow heads are already ported over the stock heads. If you do want to port then now is for sure the time to do it. You may gain 5+ hp with just a the head port but you will not feel it unless everything else is matched to it.
1984 RX-7 GSL-SE [size=84]My restomod project[/SIZE]
1964 Ford Galaxie 500XL flat black w/ white interior, 2 dr fastback, 390 thunderbird, C6 auto, 2500 rpm high stall converter, shift kit, AC, Holley 750 cfm
[size=100]RIP 1983 RX-7[/SIZE]
My Car Blog
-
Nick Leone
- Senior Member
- Posts: 245
- Joined: Wed Dec 12, 2007 9:14
- Location: Arvada
- Contact:
What are you going to do with the Miata motor?
Nick Leone
99 FSP 10 HS
Mods: Short Ram intake, Front and rear strut tower braces, Corksport Power series cat back exhaust, APR CF side mirrors, short throw shifter, Bronzoil shifter bushings, MX-3 Rear lower tie bar and 18% tint.
http://www.myspace.com/nicklphotography
http://imbob29.deviantart.com/
99 FSP 10 HS
Mods: Short Ram intake, Front and rear strut tower braces, Corksport Power series cat back exhaust, APR CF side mirrors, short throw shifter, Bronzoil shifter bushings, MX-3 Rear lower tie bar and 18% tint.
http://www.myspace.com/nicklphotography
http://imbob29.deviantart.com/
-
coloskydiver
- Senior Member
- Posts: 845
- Joined: Tue Jan 22, 2008 9:14
- Location: Aurora, CO
- Contact:
Nick Leone wrote:What are you going to do with the Miata motor?
I am looking to sell it if you know anyone who is interested. I would like to sell it with the trany as well. It is still in the car, runs great and if someone wants to check it out while it is still in the car, send them my way. If you check out the first post in this thread the motor only has 47k miles on it, brand new clutch and the 5 speed is in great condition.
I am looking for $850 for the entire drive train and would sell it for $750 to any CMZC member or members friend.
Help me get this done faster!!!:)
Oh and Chris, I do have the the Trickflow Intake manifold and plenum. I got the Trickflow topend kit for the 302. It came with the heads, manifold, plenum, roller rockers, cam, push rods, valve covers, and gasket set. Everything I needed but it sounds like I should invest in a some head work:D.
- RX-7 Chris
- Posts: 7800
- Joined: Tue Oct 02, 2007 9:14
- Location: Colorado Springs
- Contact:
If that is the case then I would go with the valve job and call it good.
1984 RX-7 GSL-SE [size=84]My restomod project[/SIZE]
1964 Ford Galaxie 500XL flat black w/ white interior, 2 dr fastback, 390 thunderbird, C6 auto, 2500 rpm high stall converter, shift kit, AC, Holley 750 cfm
[size=100]RIP 1983 RX-7[/SIZE]
My Car Blog
-
morgan1959
Coloskydiver,
I currently have a mega monster miata and have been very pleased with the car. More tractable then I thought it would be.
I had some cooling problem but was originally missing some underpan panels. Once corrected, it ran cool (4 row Al radiator with pusher fans). The body appears to be stock which is fun because it is a true sleeper and the corvettes etc are fun to play with.
I have the T5 and a thunderbird independent posi rear end. The car has been bored and has a supercharger along with GT Al heads. The other probelm I have had is with the electronic chip to modify the computer to match the supercharger (using a Tweecer RT - very good control but it currently isn't working - hope to fix soon. Using the A9 computer and wiring harness from the mustang.)
While I have the full 3 inch dual exhausts, I understand the 2.5 inch exhaust do not cut into the horsepower. The ground clearance is limited so I am going to see about modifying the current exhaust.
Good luck on the project - its is a great and dependable car.
I currently have a mega monster miata and have been very pleased with the car. More tractable then I thought it would be.
I had some cooling problem but was originally missing some underpan panels. Once corrected, it ran cool (4 row Al radiator with pusher fans). The body appears to be stock which is fun because it is a true sleeper and the corvettes etc are fun to play with.
I have the T5 and a thunderbird independent posi rear end. The car has been bored and has a supercharger along with GT Al heads. The other probelm I have had is with the electronic chip to modify the computer to match the supercharger (using a Tweecer RT - very good control but it currently isn't working - hope to fix soon. Using the A9 computer and wiring harness from the mustang.)
While I have the full 3 inch dual exhausts, I understand the 2.5 inch exhaust do not cut into the horsepower. The ground clearance is limited so I am going to see about modifying the current exhaust.
Good luck on the project - its is a great and dependable car.
- RX-7 Chris
- Posts: 7800
- Joined: Tue Oct 02, 2007 9:14
- Location: Colorado Springs
- Contact:
morgan1959 wrote:Coloskydiver,
I currently have a mega monster miata and have been very pleased with the car. More tractable then I thought it would be.
I had some cooling problem but was originally missing some underpan panels. Once corrected, it ran cool (4 row Al radiator with pusher fans). The body appears to be stock which is fun because it is a true sleeper and the corvettes etc are fun to play with.
I have the T5 and a thunderbird independent posi rear end. The car has been bored and has a supercharger along with GT Al heads. The other probelm I have had is with the electronic chip to modify the computer to match the supercharger (using a Tweecer RT - very good control but it currently isn't working - hope to fix soon. Using the A9 computer and wiring harness from the mustang.)
While I have the full 3 inch dual exhausts, I understand the 2.5 inch exhaust do not cut into the horsepower. The ground clearance is limited so I am going to see about modifying the current exhaust.
Good luck on the project - its is a great and dependable car.
Sounds like you have a nice car.
1984 RX-7 GSL-SE [size=84]My restomod project[/SIZE]
1964 Ford Galaxie 500XL flat black w/ white interior, 2 dr fastback, 390 thunderbird, C6 auto, 2500 rpm high stall converter, shift kit, AC, Holley 750 cfm
[size=100]RIP 1983 RX-7[/SIZE]
My Car Blog
- Colombia28
- Posts: 4216
- Joined: Wed Sep 19, 2007 9:14
- Location: Lone Tree
- Contact:
-
coloskydiver
- Senior Member
- Posts: 845
- Joined: Tue Jan 22, 2008 9:14
- Location: Aurora, CO
- Contact:
morgan1959 wrote:Coloskydiver,
I currently have a mega monster miata and have been very pleased with the car. More tractable then I thought it would be.
I had some cooling problem but was originally missing some underpan panels. Once corrected, it ran cool (4 row Al radiator with pusher fans). The body appears to be stock which is fun because it is a true sleeper and the corvettes etc are fun to play with.
I have the T5 and a thunderbird independent posi rear end. The car has been bored and has a supercharger along with GT Al heads. The other probelm I have had is with the electronic chip to modify the computer to match the supercharger (using a Tweecer RT - very good control but it currently isn't working - hope to fix soon. Using the A9 computer and wiring harness from the mustang.)
While I have the full 3 inch dual exhausts, I understand the 2.5 inch exhaust do not cut into the horsepower. The ground clearance is limited so I am going to see about modifying the current exhaust.
Good luck on the project - its is a great and dependable car.
WOW!!! It sounds like you have one hell of a Miata. I can not wait for this thing to be done but know that I still have a lot of work ahead of me. I guess that's what makes projects like these so rewarding. Did you build the Monster yours self or have someone build it? I would love to chat and get some pointers and advice. To steal a line off of another forum, "I am not a mechanic, I just like to play in my garage". Any help or advice would be greatly appreciated.
-
morgan1959
Coloskydiver
Have to admit that I bought the mega monster miata from a drag racer in Estes Park who had it built by the original Monster Miata in California. I have done some work with the cooling, ecu, and engine programs along with the injectors, the supercharger, etc.
When I get it back on the road, we should get together and see if my car can be of any help - in the meantime keep on trucking.
Jim
Have to admit that I bought the mega monster miata from a drag racer in Estes Park who had it built by the original Monster Miata in California. I have done some work with the cooling, ecu, and engine programs along with the injectors, the supercharger, etc.
When I get it back on the road, we should get together and see if my car can be of any help - in the meantime keep on trucking.
Jim
-
coloskydiver
- Senior Member
- Posts: 845
- Joined: Tue Jan 22, 2008 9:14
- Location: Aurora, CO
- Contact:
It is amazing how much money it takes to build a solid motor. Well here it is boys an girls, the heart of the beast or monster in this case.
I finally got my motor back form the machine shop and it is ready for the final assembly.


The guys a Gun Automotive (Highly Recommend for any machine work) did a lot of work to get this thing ready for the thrashing it will experience.
They:
1. Cleaned the block (dip tank and steam)
2. Bored 30 over
3. Line honed
4. Decked the block (leveling for the heads)
5. Completely balanced the rotating assembly including the flywheel and balancer .
6. Installed all the freeze plugs, cam bearing and cleaned out all the water jackets
7. Worked the heads- Cleaned, adjusted and 3 angle valve job.
8. Finally they assembled the short block.
I was originally going to assemble the block myself, but with how this thing is going to be driven and being a spinner and not a torquer, I thought it be best to leave it to the pro's.
The other thing is I am really glad I decided to bring my heads in. Quite a few people were like, "why would you bring brand new, out of the box heads in to the machine shop?". Well, it turned out that there were a few valves that were out of a line and springs that need reseated. Lesson learned, the best time for head work is right out of the box or first thing in the morning.
Now all I need to do is assemble the top end and she is build.
I am planning on getting the block painted and most of the top end assembled. There is nothing better than engine work on a cold, rain/snowy Saturday. I will post more pics up as I progress.
I finally got my motor back form the machine shop and it is ready for the final assembly.
The guys a Gun Automotive (Highly Recommend for any machine work) did a lot of work to get this thing ready for the thrashing it will experience.
They:
1. Cleaned the block (dip tank and steam)
2. Bored 30 over
3. Line honed
4. Decked the block (leveling for the heads)
5. Completely balanced the rotating assembly including the flywheel and balancer .
6. Installed all the freeze plugs, cam bearing and cleaned out all the water jackets
7. Worked the heads- Cleaned, adjusted and 3 angle valve job.
8. Finally they assembled the short block.
I was originally going to assemble the block myself, but with how this thing is going to be driven and being a spinner and not a torquer, I thought it be best to leave it to the pro's.
The other thing is I am really glad I decided to bring my heads in. Quite a few people were like, "why would you bring brand new, out of the box heads in to the machine shop?". Well, it turned out that there were a few valves that were out of a line and springs that need reseated. Lesson learned, the best time for head work is right out of the box or first thing in the morning.
Now all I need to do is assemble the top end and she is build.
I am planning on getting the block painted and most of the top end assembled. There is nothing better than engine work on a cold, rain/snowy Saturday. I will post more pics up as I progress.
- chickenwafer
- Posts: 2515
- Joined: Wed Mar 11, 2009 9:14
- Location: Greeley
Who is online
Users browsing this forum: No registered users and 17 guests


