Jump to content
HybridZ

DPG

Members
  • Posts

    34
  • Joined

  • Last visited

Everything posted by DPG

  1. I have driven a couple 240's with a lightweight flywheel and it does make a difference. My experience is limited so I can only go off of what I read on forums and research. It is hard when everyone says they know the best. I appreciate the information and will definitely take it into consideration.
  2. I appreciate all of this information. I will have to rethink everything and decide.
  3. I'm right there with you, this is just my first L motor build, I just wanted to make sure I guess. Ask the people that have done it for years and all. I appreciate the push
  4. Essentially a lighter more responsive motor that revs higher at a greater speed. I know that the difference will not be major, but it will be enough to make me smile. Everything I have read about the difference in L24 and L28 cranks, other than stroke, has been their rev speed. I am lightening everything I can, through the drivetrain as well to get this rev speed. It may be a slight failure but it should be interesting.
  5. You're right, I don't have any expectations for it to perform better, I really want the characteristics of what this motor will have compared to an L28crank/rod combo stroke build. I'm not looking for crazy power. I know I'm losing power compared to equal money I could spend, but this is what I want I just want to make sure there won't be any problems from doing this.
  6. And the head is an E31 with 45/36 valves and a custom cam from Isky that is still being specced out. Nismo .6mm head gasket.
  7. You're correct, they will be custom pistons. I am doing it for a motor that revs much faster. I'm not looking for an exceptional rev limit, just 7500, but I want the motor to spin as fast as possible. From my calculations the engine would be a 2.75L and have a compression of about 10.9. I would do a pin height of 38mm instead of 38.1. Plus it would be cool since I can't find anyone that has done this before
  8. I have been searching like crazy but have not found anything about this possibility. I am building an F54 block, using an L24 Crank and L24 Rods, but I want to do 89mm pistons. The math works out on an engine calculator using an L28 piston height of 38.1mm (or slightly shorter), but I just want to be sure I am not missing anything. Any tech info I should be aware of that would make this not possible? Maybe the simple physics doesn't work for some reason? Any help would be great guys, thanks in advance!
  9. Hi everyone, I am trying to figure out the dimensions of the Gas Tank on the car. The overall length, depth and height. I know it is an odd shape, so the height obviously at the highest point. If anyone has one they can measure I would appreciate it. Thanks in advance.
  10. No one has run this set up before? The E31 will be fully built with stage 4ish cam revving to 7500.
  11. I have a set of 45mm intake valves that but am unsure if I should go with a 35mm exhaust valve, or the 38mm exhaust valve from Arizona Z Car. Has any one done this 45/38 set up on a head before and seen positive results? I will be installing these on an E31 head that will go on an L28 block bored .040 over, with flat top pistons. Thanks for any help guys! -David
  12. As the title says, I have a set of 45mm intake valves that but am unsure if I should go with a 35mm exhaust valve, or the 38mm exhaust valve from Arizona Z Car. Has any one done this 45/38 set up on a head before and seen positive results? I will be installing these on an E31 head that will go on an L28 block bored .040 over, with flat top pistons. Thanks for any help guys! -David
  13. I was looking at the gearing again and you are very correct on the later 5spds, much closer ratios. I wasn't looking close enough on those.
  14. Here is my thought process. I have had other cars to where you could change out the gears to basically a shorter gear car. The 1st 2nd and 3rd gears on the 72-76 4 spds were shorter gears than the later 5 spds. What I want to do is swap out the first 3 gears in the 5 spd with the first 3 gears from the 4spd. I'm not well versed and educated on manual transmission design and build so I don't completely understand what you mean by the main shaft gear and the counter gear needing to be a set. Could you expand on this with some more explanation?
  15. Yeah, I was noticing the gearing for each year and the earlier models had much better 1st-3rd gears (for NA applications), Tranmission and Gear Ratios, so I think I will have to give it a try.
  16. Hi guys, I am trying to find out if the 4spd gears from a 72-76 tranny will fit into a 5spd later model tranny. I haven't been able to find anything through searching. I know the 4spd and 5spd tranny's from later years shared the first 4 gears, so I wasn't sure if they changed the gear thickness. Thank you for any help! -David
×
×
  • Create New...