Build Thread (FE3, RX7 TII, EFR 6258, MS3)
08-27-2014, 02:35 AM
#463
I need to go back and read this thread again... i have an F2 block with FE3 crank, B2600 rods, and F2 pistons chucked together in the name of science sitting on my garage floor.
Any thoughts from driving it so far as to how the change in rod:stroke ratio is showing itself in driving characteristics? This should be close to 2:1, right? 1.9xx?
Any thoughts from driving it so far as to how the change in rod:stroke ratio is showing itself in driving characteristics? This should be close to 2:1, right? 1.9xx?
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08-27-2014, 02:46 AM
#464
Alright so i did in fact get on the dyno for a couple hours after work the other day. Still not polished out 100% but the curve and its potential can definitely be seen. I'll try to post up a log file tomorrow as well for those with megalog viewer.
Currently putting down 305hp and 280ftlb torque at 14 psi. The best part is where the torque comes in and how long it holds...
If compared to the old graph (note: scaled differently but max revs should be close to the same) there are gains from 75 to 90 ft lb torque low end. You can definitely feel it.
Old graph on 17 psi and spent engine. (low compression cylinder 2 and different exhaust manifold. rolling coal.)
Erich, the tuner at PRE says he can potentially get close to 400 out of the current setup depending on if it likes more boost on pump gas but i'm thinking 350 is a safer bet on pump and then if i get a wild hair i'll go to 400ish on e85. I'll need to drop close to 8K on wheels, tires, brakes and body at that point though.
As far as ripper videos i'm sorry but the best i can do for now is hard single gear pulls. The rx7 TII trans doesn't seem to be going into gear easily between shifts. At a stand still the car moves slightly at the gate which makes me think its a pressure plate disengagement issue instead of a lubrication issue (act HD) but i'm considering a redline trans fluid change in hopes that its just that simple. Got a quote on a twin disk clutch from clutch masters today... 1700$
If fluid doesn't work i have an OE Kia Sportage PP in a box i can try but that's alot of work just to diagnose an issue.
Currently putting down 305hp and 280ftlb torque at 14 psi. The best part is where the torque comes in and how long it holds...
If compared to the old graph (note: scaled differently but max revs should be close to the same) there are gains from 75 to 90 ft lb torque low end. You can definitely feel it.
Old graph on 17 psi and spent engine. (low compression cylinder 2 and different exhaust manifold. rolling coal.)
Erich, the tuner at PRE says he can potentially get close to 400 out of the current setup depending on if it likes more boost on pump gas but i'm thinking 350 is a safer bet on pump and then if i get a wild hair i'll go to 400ish on e85. I'll need to drop close to 8K on wheels, tires, brakes and body at that point though.
As far as ripper videos i'm sorry but the best i can do for now is hard single gear pulls. The rx7 TII trans doesn't seem to be going into gear easily between shifts. At a stand still the car moves slightly at the gate which makes me think its a pressure plate disengagement issue instead of a lubrication issue (act HD) but i'm considering a redline trans fluid change in hopes that its just that simple. Got a quote on a twin disk clutch from clutch masters today... 1700$
If fluid doesn't work i have an OE Kia Sportage PP in a box i can try but that's alot of work just to diagnose an issue.
Last edited by yank; 08-27-2014 at 03:00 AM. Reason: More info
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08-27-2014, 09:07 AM
#467
Very nice!
Its so flat from 4-7, must be a delight. I kinda agree wtih leafy in that I would expect it to spool even sooner, but you're on pump and likely very conservative timing, on corn and with proper timing I bet this thing would be nuts.
Either way, your car must be a hoot
Its so flat from 4-7, must be a delight. I kinda agree wtih leafy in that I would expect it to spool even sooner, but you're on pump and likely very conservative timing, on corn and with proper timing I bet this thing would be nuts.
Either way, your car must be a hoot
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08-27-2014, 09:24 AM
#468
Alright so i did in fact get on the dyno for a couple hours after work the other day. Still not polished out 100% but the curve and its potential can definitely be seen. I'll try to post up a log file tomorrow as well for those with megalog viewer.
Currently putting down 305hp and 280ftlb torque at 14 psi. The best part is where the torque comes in and how long it holds...
If compared to the old graph (note: scaled differently but max revs should be close to the same) there are gains from 75 to 90 ft lb torque low end. You can definitely feel it.
Old graph on 17 psi and spent engine. (low compression cylinder 2 and different exhaust manifold. rolling coal.)
Erich, the tuner at PRE says he can potentially get close to 400 out of the current setup depending on if it likes more boost on pump gas but i'm thinking 350 is a safer bet on pump and then if i get a wild hair i'll go to 400ish on e85. I'll need to drop close to 8K on wheels, tires, brakes and body at that point though.
As far as ripper videos i'm sorry but the best i can do for now is hard single gear pulls. The rx7 TII trans doesn't seem to be going into gear easily between shifts. At a stand still the car moves slightly at the gate which makes me think its a pressure plate disengagement issue instead of a lubrication issue (act HD) but i'm considering a redline trans fluid change in hopes that its just that simple. Got a quote on a twin disk clutch from clutch masters today... 1700$
If fluid doesn't work i have an OE Kia Sportage PP in a box i can try but that's alot of work just to diagnose an issue.
Currently putting down 305hp and 280ftlb torque at 14 psi. The best part is where the torque comes in and how long it holds...
If compared to the old graph (note: scaled differently but max revs should be close to the same) there are gains from 75 to 90 ft lb torque low end. You can definitely feel it.
Old graph on 17 psi and spent engine. (low compression cylinder 2 and different exhaust manifold. rolling coal.)
Erich, the tuner at PRE says he can potentially get close to 400 out of the current setup depending on if it likes more boost on pump gas but i'm thinking 350 is a safer bet on pump and then if i get a wild hair i'll go to 400ish on e85. I'll need to drop close to 8K on wheels, tires, brakes and body at that point though.
As far as ripper videos i'm sorry but the best i can do for now is hard single gear pulls. The rx7 TII trans doesn't seem to be going into gear easily between shifts. At a stand still the car moves slightly at the gate which makes me think its a pressure plate disengagement issue instead of a lubrication issue (act HD) but i'm considering a redline trans fluid change in hopes that its just that simple. Got a quote on a twin disk clutch from clutch masters today... 1700$
If fluid doesn't work i have an OE Kia Sportage PP in a box i can try but that's alot of work just to diagnose an issue.
Wow looks great!
I have the same problem with the clutch/trans on our Miata. I've bled the brand new hydraulics enough times i could scream, spent hours messing around with the pedal adjustment, and even with it adjusted out as far as it will go without slipping, it still creeps forward at a stop and doesn't shift real nice in the lower gears.
Hoping it all holds together long enough to scrape together money for a 5spd and a 949 clutch to replace this 5spd and FM clutch.
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09-18-2014, 11:35 PM
#471
Did a PCA autocross the other day. Everything is operating well. I was extremely limited with 205 Nitto Neogens but it was fun to skate around regardless. Ended up pulling out 5psi and still was rolling them over in the short straights.
see youtube.
I'm on the hunt for an M3 E46 6 speed manual and a car payment. No more of this racecar DD stuff. I'm over it. This means a diet and new go fast plans for the Miata.
see youtube.
I'm on the hunt for an M3 E46 6 speed manual and a car payment. No more of this racecar DD stuff. I'm over it. This means a diet and new go fast plans for the Miata.
Last edited by yank; 11-10-2016 at 01:43 AM.
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09-19-2014, 09:03 AM
#474
Did a PCA autocross the other day. Everything is operating well. I was extremely limited with 205 Nitto Neogens but it was fun to skate around regardless. Ended up pulling out 5psi and still was rolling them over in the short straights.
I'm on the hunt for an M3 E46 6 speed manual and a car payment. No more of this racecar DD stuff. I'm over it. This means a diet and new go fast plans for the Miata.
I'm on the hunt for an M3 E46 6 speed manual and a car payment. No more of this racecar DD stuff. I'm over it. This means a diet and new go fast plans for the Miata.
coolstorybro.jpeg
we'll see it when it happens.
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10-30-2014, 12:20 PM
#479
from this thread, post 60, mighty mouse said:
I was under the impression a spreader plate was typically used in hardware applications like a bolt in cage or harness. But I get your point, I just think it's as thin as you thought where the mounts are being welded.
The metal on the trans tunnel is double walled, so you can put some heat into it. The floorboards however are not.
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11-24-2014, 11:31 AM
#480
Yes it was super thin. If i had to do it again i'd make a bolt in brace that would be connected to the frame rails. that way if you bail on the project you can always go back to the 1.6 stuff. DC2696 has the right idea. He was able to swap back to the 1.6L setup in <12 hours after he popped his FE3 at Laguna seca.
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