Stroker engine questions.
#23
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How many LS-1, LS-2, LS-3, LS-x motors have you put on the scales?? Do you know that some LS motors have iron blocks (with AL heads) and actually weigh more than a comparable small block Ford??? Weight not withstanding, does the fact that a late model LSX drivetrain sells for 2x over a 5.0/4.6 Mustang drivetrain make any difference??????
#24
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OE displacement is 1839cc, 0.5mm overbore is 1862cc, 1mm overbore is 1884cc. FM Stroker is a 4mm stroke and a 1.5mm overbore, for a total of 1998cc (IIRC).
#25
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Duckie,
How many LS-1, LS-2, LS-3, LS-x motors have you put on the scales?? Do you know that some LS motors have iron blocks (with AL heads) and actually weigh more than a comparable small block Ford??? Weight not withstanding, does the fact that a late model LSX drivetrain sells for 2x over a 5.0/4.6 Mustang drivetrain make any difference??????
How many LS-1, LS-2, LS-3, LS-x motors have you put on the scales?? Do you know that some LS motors have iron blocks (with AL heads) and actually weigh more than a comparable small block Ford??? Weight not withstanding, does the fact that a late model LSX drivetrain sells for 2x over a 5.0/4.6 Mustang drivetrain make any difference??????
#26
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Deerhunter, thanks for the info.
Duckie_uk, yes encouragement (information) is what I need.
FM has a few dynos comparing 1.8's and 2.0's but none with the 3071 on it and none with the 1.8 built. I am guessing the stroker will give about 40 more HP.
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If you're going to spring for a stroker, my advice is to go with the FM kit. It's been tested to ludicrous power levels (550-800 rwhp) and, more importantly, the rod ratio (when coupled with their rods/pistons) is kept stock for "revability". The MRM kit appears to get the displacement only through increased bore, so you won't get the low-end torque a stroker affords.
#28
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I love the misconseption that high boost kills engines LOL. Like as if you go over 20psi your engine magically blows up. Build it right, tune it right, know the true hp limits of what your internal assembley can handle, and you'll have no problems. My old mirage made almost 500whp on a bone stock internal 4g63 with 100% no problems.
#29
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True dat. Also, it is nice to have the lower piston speed of the stock stroke and not have the oil consumption issues associated with a piston pin in the oil ring land. This is quite similar to the 331 vs 347 SBF debate; do you want low end torque and slightly reduced engine life or high end RPM and a more stable piston in the bore?
#30
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I love the misconseption that high boost kills engines LOL. Like as if you go over 20psi your engine magically blows up. Build it right, tune it right, know the true hp limits of what your internal assembley can handle, and you'll have no problems. My old mirage made almost 500whp on a bone stock internal 4g63 with 100% no problems.
There are lots of of DSMs/Evos putting down 400+ rwhp on stock shortblocks. The Evo IX runs 20psi of boost stock and is totally reliable. Relevance to a boosted Miata engine discussion? ZERO!
#31
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True dat. Also, it is nice to have the lower piston speed of the stock stroke and not have the oil consumption issues associated with a piston pin in the oil ring land. This is quite similar to the 331 vs 347 SBF debate; do you want low end torque and slightly reduced engine life or high end RPM and a more stable piston in the bore?
#32
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Well i didnt mean you could make 400whp out of a stock motor miata lol. But you could do a higher boost fat tune on a stock engine just fine. I ran 22psi on a GT28 when my 1.6 had 167,000 miles on it. I mean i beat the ever loving christ outta this thing for a whole summer with ZERO problems. Its all in the tune.
#33
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2nd the OP doesnt wants little down time as i assume thats his DD.
Having the entire donor car in ur garage is definitely a +. You're doing the swap and you need a part...Oh i need this, you walk 10 feet over and u rip it out and install it on your miata. This is what allows u to do a swap in few days vs 2 months.
3rd the 5.0 weights about 100 lb more than the stock miata block. The other 150 extra lb a miata gains when doing a v8 swap is from all the running gear, the braces and anything else thats added in the swap. Most 5.0 swaps end up in the 2550 lb range.
#36
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I said a good LSD and high-dollar suspension, not a Torsen and some AFCOs. If you want a badass street machine, you should have done FCM Bilsteins. If you want a hardcore track car, you need an OS Giken and some 949 XIDAs.
OE displacement is 1839cc, 0.5mm overbore is 1862cc, 1mm overbore is 1884cc. FM Stroker is a 4mm stroke and a 1.5mm overbore, for a total of 1998cc (IIRC).
OE displacement is 1839cc, 0.5mm overbore is 1862cc, 1mm overbore is 1884cc. FM Stroker is a 4mm stroke and a 1.5mm overbore, for a total of 1998cc (IIRC).
I swapped springs on my Revalved Koni’s recently and I think one of them is dieing. Damping goes to zero near full rebound. I am scrounging trying to figure out what to do within my budget plans to fix it and I’m drooling over XIDA’s don’t want to fix the Koni because there is something better out there I just can’t find the money in my budget.
Bob
#37
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Last time we talked to you, you didn't want a track car because you were too busy doing 4th gear tire rolls at various stop-lights. If you want a proper track car you need to reinvent what you've already done. Oh, and enjoy the incessantly failing manifold.
#39
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Hustler the lecture was a good lecture, I learned a lot from it. Honestly, thank you but I have made my decision and I am happy with it.
Turbo Tim, how are you getting 2.0 from bore? What size pistons? Who sells them? Head gasket? I have not found any info on large bore 1.8's. For the money of a stroker I have tride to find information on removing the stock cylinder and replacing it with sleves. Or what displacement is possible from a combination of both. 2.2 possible?
Turbo Tim, how are you getting 2.0 from bore? What size pistons? Who sells them? Head gasket? I have not found any info on large bore 1.8's. For the money of a stroker I have tride to find information on removing the stock cylinder and replacing it with sleves. Or what displacement is possible from a combination of both. 2.2 possible?