9000rpm 2l Bp stroker gtx3576 build.
#21
So my miata got a hand me down intercooler from my rx7 today.
The rx7 needs a different intercooler when i it's going to get a 20b and v-mount.
Its a Greddy 3 row specR intercooler, the core is 600mm x 264mm x 100mm.
Going to build new end tanks, just wanted to see how it fits.
The rx7 needs a different intercooler when i it's going to get a 20b and v-mount.
Its a Greddy 3 row specR intercooler, the core is 600mm x 264mm x 100mm.
Going to build new end tanks, just wanted to see how it fits.
Last edited by shifti; 02-15-2018 at 07:41 AM.
#23
A 9K BP is a terrible idea, IMO. Its going to be a 10 hour motor with the best off the shelf parts, even my 8500rpm motor built by trackspeed was living on borrowed time. That, the vibrations, and the transmission limitation is why I went to a different engine. You're going to struggle to both keep bearings in the bottom end and keep valve seats and valves in the head. And even worse you're going to have a hard time not having everything bolted to the motor disintegrate, the bp is quite an unpleasant engine.
#24
A 9K BP is a terrible idea, IMO. Its going to be a 10 hour motor with the best off the shelf parts, even my 8500rpm motor built by trackspeed was living on borrowed time. That, the vibrations, and the transmission limitation is why I went to a different engine. You're going to struggle to both keep bearings in the bottom end and keep valve seats and valves in the head. And even worse you're going to have a hard time not having everything bolted to the motor disintegrate, the bp is quite an unpleasant engine.
What crank shaft did you run in the engine and how good was the engine balanced?
Last edited by shifti; 02-16-2018 at 03:22 AM.
#29
Head wise is where it'll get expensive, I know TNTuba has some trick parts up there that he wont share with anyone, but I also dont think he is even spinning to 8.5k like I was. But with the best supertech parts, stock lifters, cams, and valve seats the intake stuff just pounds itself into submission. Maybe ferrara still makes their TI valves and you can get some custom BeCu valve seats. With DLC on everything. And run the valve stems the right length to use the 2zz shimless lifters since they're lighter than the off the shelf subs. And pacalloy or PSi springs.
And then not killing stuff bolted to the motor (manifolds, fuel rails, manifold studs, etc) is really just a game of wait for it to break then re-make it heavier so it wont break again.
#30
Since My build and kim inglars build are both a few years old now EInar needs to exceed us but should bring the average power in our workshop for mx5 over 400whp
Really looking forward to seeing how this build works as we have 10years on my 400+ build already with a very good reliable setup.
Really looking forward to seeing how this build works as we have 10years on my 400+ build already with a very good reliable setup.
#31
That's nothing more than a standard tube/fin CAC. Those are very wide tubes and looked to be extruded. Reason I say they are extruded (not welded) tubes is the internal support rib. The rib in the tube is likely there to give structural support to pass pressure cycle requirements.
The ones i have seen where much coarser.
#32
Stock crank, you have to ask savington how well it was balanced, I'm sure he did a great job. Getting the bottom end to survive is probably the easiest and cheapest part. I know my motor was struggling to keep an oil film on the bearings, either just by the type of forces involved on such a narrow bearing journal or because crank flex was letting a lot of oil spill out that shouldnt have been. I'm sure drilling out and chamfering all the oil passages on the crank and running a boundary race pump would have made a significant impact in the life expectancy and of course running it with actual race oil and not T6 for its whole life would have helped too. Its not like the motor is dead but the current owner of it knows it was run hard and that he should keep his rpms down to get a few more years out of it.
Head wise is where it'll get expensive, I know TNTuba has some trick parts up there that he wont share with anyone, but I also dont think he is even spinning to 8.5k like I was. But with the best supertech parts, stock lifters, cams, and valve seats the intake stuff just pounds itself into submission. Maybe ferrara still makes their TI valves and you can get some custom BeCu valve seats. With DLC on everything. And run the valve stems the right length to use the 2zz shimless lifters since they're lighter than the off the shelf subs. And pacalloy or PSi springs.
And then not killing stuff bolted to the motor (manifolds, fuel rails, manifold studs, etc) is really just a game of wait for it to break then re-make it heavier so it wont break again.
Head wise is where it'll get expensive, I know TNTuba has some trick parts up there that he wont share with anyone, but I also dont think he is even spinning to 8.5k like I was. But with the best supertech parts, stock lifters, cams, and valve seats the intake stuff just pounds itself into submission. Maybe ferrara still makes their TI valves and you can get some custom BeCu valve seats. With DLC on everything. And run the valve stems the right length to use the 2zz shimless lifters since they're lighter than the off the shelf subs. And pacalloy or PSi springs.
And then not killing stuff bolted to the motor (manifolds, fuel rails, manifold studs, etc) is really just a game of wait for it to break then re-make it heavier so it wont break again.
And a lot of goddies in the head. but time will see how long it survives.
#39
[QUOTE=shifti;1466750]So here is the flow numbers on my 99 head.
it has +1mm oversize supertech valves and a port and reshape jobb from Racelab.
The black lines are stock ports with stock valves.
The purple line is with a litle bit of porting and stock valves.
The green line is with some putty in the ports to check if in the ports would react to a smaler passage, and stock valves.
The blue line is the final ports with oversized valves port jobb, and reshaped ports.
The final flow numbers was:
.300 = 212CFM
.400 = 252CFM
.500 = 266CFM
.600 = 281CFM
Very good numbers.
Please post pics when you get a chance.
it has +1mm oversize supertech valves and a port and reshape jobb from Racelab.
The black lines are stock ports with stock valves.
The purple line is with a litle bit of porting and stock valves.
The green line is with some putty in the ports to check if in the ports would react to a smaler passage, and stock valves.
The blue line is the final ports with oversized valves port jobb, and reshaped ports.
The final flow numbers was:
.300 = 212CFM
.400 = 252CFM
.500 = 266CFM
.600 = 281CFM
Very good numbers.
Please post pics when you get a chance.
#40
They are made by catcams in the UK.
Do not remember the price.
The specs are: Intake Exhaust
Lash ramp : 0.25mm 0.25mm
duration @ 0.1mm : 285° 277°
duration @ 1.0mm : 252° 244°
valve lift : 12.50mm 12.00mm
lobe angle : 106° 106°
timing @ 1.0mm : 20° / 52° 48° / 16°
valve lift @ TDC : 3.70mm 3.15mm
Do not remember the price.
The specs are: Intake Exhaust
Lash ramp : 0.25mm 0.25mm
duration @ 0.1mm : 285° 277°
duration @ 1.0mm : 252° 244°
valve lift : 12.50mm 12.00mm
lobe angle : 106° 106°
timing @ 1.0mm : 20° / 52° 48° / 16°
valve lift @ TDC : 3.70mm 3.15mm