 7AFE, ENGINE ISSUES |
 Jan 20, 2004 - 8:43 AM
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 Enthusiast  Joined May 22, '03 From NOVA Currently Offline Reputation: 16 (100%)  |
ok so i think i've gathered from this whole forum that the least favored engine of all our cars is the 7-afe but hey most of us are stuck with it. So i've looked around and checked in most post for what everyone has suggested meaning: turbo, nitrous oxide, engine swaps. But turbos for this engine are not only hard to piece together but cause alot of issues. Now what i'm asking for is before we turbo and nos we need internals right? cams, rods, pistons, heads redone...ect. but these are hard to find from what i've looked. maybe its just me and i'm really crappy at looking for parts. soo to make this short if you know where to find cams for a 7 put up a link. if you know where to find FORGED pistons, post a link or light weight and stronger rods....you know the deal by now THANKS guys and girls for the few of you out there
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Jan 23, 2004 - 7:15 PM
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 Enthusiast Joined Aug 29, '02 From Dallas, Tx Currently Offline Reputation: 0 (0%) |
You kinda contradict yourself in here but you're almost on the right track. The n/a motor will have to rev more to make the same power, it might not make less torque, but it will not make it at the lower rpm. Reving higher will greatly increase the stresses in the motor as will the slightly greater cylinder pressures created because of the necessary increase in volumetric efficiency (making the engine breathe better). The turbo engine will have much higher cylinder pressures due to the extra air and fuel entering the cylinders but it will not have to rev nearly as high to make the same power. Because of the way the cam and ignition timing works out, the higher cylinder pressures at lower rpm will actually help to decrease the stresses on the rods, although the crank and its bearings will still see higher stresses. To make a really long story really short, for the same power level its much easier on an engine to be turboed than to have to rev higher without the turbo. That being said, the turbo motor will still have higher stresses than the stock motor. Its almost going to be impossible to make an n/a 7a put out 300hp. Its going to have to rev very very high and the only 'stock' part that will be left is the block. Its definitely possible to make a 300hp 7a with a turbo. I think its even possible with a stock block, crank, cams, and head (ported). But thats just my oppinion and will remain so until I come up with the funds to prove it. |
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Posts in this topic
playr158 7AFE Jan 20, 2004 - 8:43 AM
doGGy QUOTE (playr158 @ Jan 20, 2004 - 6:43 AM) ok so i ... Jan 20, 2004 - 9:02 AM toyotaspeed_90 get latermodel 4a-gze pistons from a JDM redtop 4a... Jan 22, 2004 - 1:31 PM 97sccelica stock 7afe cams work well for mild turbo applicati... Jan 22, 2004 - 6:27 PM boosted_K2 the "problem" as you so call it. with th... Jan 22, 2004 - 6:36 PM FallenHero the 300 horse 7age 20v that was posted up recently... Jan 23, 2004 - 1:12 AM Kwanza26 QUOTE (FallenHero @ Jan 23, 2004 - 6:12 AM) the 30... Jan 23, 2004 - 2:14 AM SpedToe169 QUOTE I'm sure the 7A crank can take 300hp n/a... Jan 23, 2004 - 1:35 PM toyotaspeed_90 are your tranny's actually holding up? last i ... Jan 23, 2004 - 2:05 PM RedSunCelica I'll put all your worrys to rest in less then ... Jan 23, 2004 - 4:20 PM Kwanza26 QUOTE (SpedToe169 @ Jan 23, 2004 - 6:35 PM) Q... Jan 23, 2004 - 5:47 PM toyotaspeed_90 QUOTE (RedSunCelica @ Jan 23, 2004 - 9:20 PM) I... Jan 23, 2004 - 6:27 PM OOBE All that money spent on 7AFE and hybrid applicatio... Jan 23, 2004 - 6:39 PM toyotaspeed_90 how has he thrown money out? he gets parts from pu... Jan 23, 2004 - 7:05 PM boosted_K2 pretty much any honda swap is plug and play. its l... Jan 23, 2004 - 7:20 PM toyotaspeed_90 QUOTE (boosted_K2 @ Jan 24, 2004 - 12:20 AM) prett... Jan 23, 2004 - 8:01 PM OOBE QUOTE (toyotaspeed_90 @ Jan 23, 2004 - 5:05 PM) ho... Jan 23, 2004 - 11:35 PM boosted_K2 weve gotten way offtopic. all im trying to say is ... Jan 23, 2004 - 11:51 PM toyotaspeed_90 i'll just put it as his 7a-fe pulls just like ... Jan 25, 2004 - 5:21 AM OOBE QUOTE (toyotaspeed_90 @ Jan 25, 2004 - 3:21 AM) i... Jan 25, 2004 - 8:25 PM subsolo_21 QUOTE Haha this is cool...I feel like a pre-school... Jan 25, 2004 - 8:45 PM toyotaspeed_90 QUOTE (OOBE @ Jan 26, 2004 - 1:25 AM) QUOTE (toyot... Jan 26, 2004 - 12:03 AM OOBE Get over it, my brother...all that baba you wrote ... Jan 26, 2004 - 11:12 PM OOBE QUOTE (subsolo_21 @ Jan 25, 2004 - 6:45 PM) QUOTE ... Jan 26, 2004 - 11:29 PM BlackSTX QUOTE (Kwanza26 @ Jan 23, 2004 - 12:14 AM) QUOTE (... Jan 27, 2004 - 5:08 PM cleanrolla97dx club 4AG
click on --------------tech reference
... Jan 29, 2004 - 1:56 AM SpedToe169 The biggest problem I see is that the 7a manifolds... Jan 29, 2004 - 10:24 AM toyotaspeed_90 with using a smallport head, you will have to do o... Jan 29, 2004 - 2:46 PM FallenHero please clear this up for me: is the small port the... Jan 30, 2004 - 12:56 AM toyotaspeed_90 smallport is the redtop (aka latemodel as well)...... Jan 30, 2004 - 1:14 AM Kwanza26 QUOTE (toyotaspeed_90 @ Jan 30, 2004 - 6:14 A... Jan 30, 2004 - 10:42 AM toyotaspeed_90 found some new info out this past weekend.... NOT ... Feb 2, 2004 - 4:13 AM Kwanza26 QUOTE (toyotaspeed_90 @ Feb 2, 2004 - 9:13 AM) fou... Feb 2, 2004 - 4:32 AM toyotaspeed_90 from what i've heard.... that's bad info..... Feb 2, 2004 - 10:59 AM FallenHero what came in the old school MR-2's that weren... Feb 3, 2004 - 12:25 AM boosted_K2 MK1 MR2 N/A: 4A-GE
MK1 MR2 SC: 4A-GZE
MK2 MR2 N/A:... Feb 3, 2004 - 12:31 AM toyotaspeed_90 QUOTE (boosted_K2 @ Feb 3, 2004 - 5:31 AM) MK1 MR2... Feb 3, 2004 - 1:59 AM
Kwanza26 QUOTE (toyotaspeed_90 @ Feb 2, 2004 - 3:59 PM) fro... Feb 3, 2004 - 1:07 PM |
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