Other Engine Conversions - non V-8 Discussion of non-rotary engines, exc V-8's, in a car originally powered by a Rotary Engine.

4g63 in a rx7

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Old Sep 14, 2006 | 11:53 AM
  #126  
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Originally Posted by hondaracer7a
ok so explain to me how much harder it is bcuz i have done a 383 small block s10 conversion which was easy as hell then there was the big block 454 which was HELL! so which one is it decently challenging or rediculously hard
Obviously, small blocks are smaller, so they will probably fit better.


Uh is there something else you were wondering?
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Old Sep 16, 2006 | 09:44 PM
  #127  
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The 4g63 came in wideblock form, too. I think for a person in the US it'd be easier to find a 4g64, but still, you can find them.

It doesn't really matter though. The 64 is basically the same block with 6mm extra deck height (and a larger factory bore). There are parts out there for it and the DOHC head bolts right on. The 64 crank is forged like the 63's, and the long-rod 64's R/S ratio of 1.56 is still in typical Honda territory.

I'd like to build an FD with a RWD 4g64 but I'm moving to Michigan. It's making me rethink my next car purchase.
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Old Sep 17, 2006 | 09:27 PM
  #128  
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the 2.0L version of the wideblock is the G63B
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Old Sep 18, 2006 | 12:20 AM
  #129  
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Well they're all similar engine codes, the real confusing one is the G4CS. But that's a narrow block and it came from a Hyundai.
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Old Sep 20, 2006 | 06:47 PM
  #130  
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What kind of costs am I looking at in putting the DOHC head on a 4g46? Is the mitsu aftermarket nearly as cheap as the honda one?
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Old Sep 21, 2006 | 01:22 AM
  #131  
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Originally Posted by Tessai
What kind of costs am I looking at in putting the DOHC head on a 4g46? Is the mitsu aftermarket nearly as cheap as the honda one?

There is no comparison-its substantialy cheaper to build a Mistu than a Honda-power# for power#
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Old Sep 25, 2006 | 06:21 PM
  #132  
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Originally Posted by coltboostin
There is no comparison-its substantialy cheaper to build a Mistu than a Honda-power# for power#
Hrm, and if you need the B2600 bellhousing, does this not mean that manual Ford F-150 bellhousings will work as well?
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Old Sep 26, 2006 | 02:09 PM
  #133  
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Originally Posted by Tessai
Hrm, and if you need the B2600 bellhousing, does this not mean that manual Ford F-150 bellhousings will work as well?
? can you explain
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Old Sep 26, 2006 | 05:18 PM
  #134  
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According to one of the sites posted, the bellhousing from the B2600 truck will bolt up to the 4g63, and then the TurboII trans will bolt to that. The B2600 and the Ford F-150 are the same, right?

Just thinking that there are more manual F-150's than any mazda truck in the junkyards around here.

Or am I just way off?
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Old Sep 26, 2006 | 11:57 PM
  #135  
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Originally Posted by Tessai
According to one of the sites posted, the bellhousing from the B2600 truck will bolt up to the 4g63, and then the TurboII trans will bolt to that. The B2600 and the Ford F-150 are the same, right?

Just thinking that there are more manual F-150's than any mazda truck in the junkyards around here.

Or am I just way off?
NO. The 1994+ Mazda B-series pickups are sisters to the Ford Rangers. The earlier B-series (before 1994) are true Mazda trucks. If the F-150's share any parts with the Ranger, then maybe it will fit the 1994+ B-series, but NOT the B2600.
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Old Sep 27, 2006 | 11:22 PM
  #136  
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its only a 87-88 b2600 there are two versions you want the one with the starter on the drivers side
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Old Sep 28, 2006 | 12:51 PM
  #137  
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Rotary > Crank walk.
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Old Sep 28, 2006 | 03:15 PM
  #138  
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Originally Posted by masao
Rotary > Crank walk.
Thats why you use a 6-bolt
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Old Sep 28, 2006 | 03:47 PM
  #139  
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There was one guy in DSM club I was a member of that had crank walk in an early 6 Bolt. He had mid 400's WHP and beat the **** out of the car. I think he went through 3 transmissions in one year.

Nothing like the 7 bolt turbo motors. I have have known at least 10 owners of 7 bolt motors. Not one went over 100K miles without crank walk, bet then none of them where completly stock.

And then theres me, I had 2 motors (allmost stock) replaced under waranty for crank walk in 6 months in a later 2G.
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Old Oct 14, 2006 | 08:54 PM
  #140  
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I had/have been researching RWD 4G63 swaps for about three years. I think the best answer has come within the past two months for this. I give you a God amonst men.

http://www.japaneseauto.com/mitstoyo...sadaptors.html

The I've seen some people cut and weld the two bell housings together and they usually fail in some way. They don't line up correctly and when you can get them to gether they breack... again because they don't really line up right. This guy has taken all of that away by making a custom bellhousing... FROM SCRATCH!!! I emailed him last night and he is selling them for $350. A bit rich... but when you consider the amount of work he put in it... that YOU don't have to, it's worth it.

If my friend doesn't take my toyota trans... that I'm pulling right now *dinner brake**... I'm doing a RWD 4G63 into *something* at some point.
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Old Oct 14, 2006 | 10:26 PM
  #141  
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Originally Posted by rotor vs. piston
I had/have been researching RWD 4G63 swaps for about three years. I think the best answer has come within the past two months for this. I give you a God amonst men.

http://www.japaneseauto.com/mitstoyo...sadaptors.html

The I've seen some people cut and weld the two bell housings together and they usually fail in some way. They don't line up correctly and when you can get them to gether they breack... again because they don't really line up right. This guy has taken all of that away by making a custom bellhousing... FROM SCRATCH!!! I emailed him last night and he is selling them for $350. A bit rich... but when you consider the amount of work he put in it... that YOU don't have to, it's worth it.

If my friend doesn't take my toyota trans... that I'm pulling right now *dinner brake**... I'm doing a RWD 4G63 into *something* at some point.

I already have the motor in a car bolted to a transmission. T minus two weeks.....
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Old Oct 25, 2006 | 02:14 PM
  #142  
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I have a 88 b2600 bellhousing for sale its the one you need $100 shipped
PM me
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Old Oct 25, 2006 | 02:21 PM
  #143  
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Its the one I already have bolted into the car.


But, I may be interested in another-can we work ont hat price?
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Old Oct 25, 2006 | 04:46 PM
  #144  
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the day it starts. you call me!!! or ill MURDER YOU!!!!

:0
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Old Oct 25, 2006 | 05:09 PM
  #145  
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Originally Posted by Low Impedance
the day it starts. you call me!!! or ill MURDER YOU!!!!

:0

Yesir!

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Old Oct 29, 2006 | 09:21 PM
  #146  
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i dont know guys, i have a 95 tsi awd as a daily with 130k on the clock sporting the stock 7bolt and i have no issues. (i probably just cursed myself)
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Old Oct 29, 2006 | 11:46 PM
  #147  
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Yeah, my '97 only has 72k on it, but they have been trouble-free (with regards to the engine).

Every time I mention it, I feel like I'm cursing myself even more.
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Old Oct 30, 2006 | 12:03 AM
  #148  
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The b2000, and the FC R trans are basically the same trans with some differences in the bell housings(nothing a lil grinding wont fix), so mounting up a starquest motor would be easier than a 4g63 because of the wide block Vs narrow block castings. I personally would go with the starquest motor because its a tank, easier to find, cheaper and would most likly be cheaper to get up and running. They also hold 400Hp easily once you change out the pistons(stock ones suck). Now if there was just something you could do about the stupid TBI setup it would be all good.
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Old Oct 30, 2006 | 02:09 PM
  #149  
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funny thing i ran into this thread looking for info for a buddies 93FD haha...I own a dsm and saw the words RELIABLE and DSM together in the same sentence and thought holy sh*t hell just froze over!! I think a 13B or a 4g63T or LS1 are all good powerplants just gotta do it right, tuning is everything. Its never the engines fault, always human error, even in crankwalk in the 7bolts, its cus some cranks weren't made to spec at the factory due to what?? HUMAN error. And i think its because they were making 4 banger imports at a chrysler factory in middle of nowhere Normal, IL.
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Old Oct 30, 2006 | 07:43 PM
  #150  
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Originally Posted by fcdrifter13
The b2000, and the FC R trans are basically the same trans with some differences in the bell housings(nothing a lil grinding wont fix), so mounting up a starquest motor would be easier than a 4g63 because of the wide block Vs narrow block castings. I personally would go with the starquest motor because its a tank, easier to find, cheaper and would most likly be cheaper to get up and running. They also hold 400Hp easily once you change out the pistons(stock ones suck). Now if there was just something you could do about the stupid TBI setup it would be all good.
First of all, the B2600 is the only truck with the R-tranny in it. Secondly, the B2200 for instance, is more similar to the N/A FC tranny, so it's not a good choice. The B2600 bellhousing is the only way to go, and actually, you need the right year because they're not all the right bellhousing.

The Starquest motor is junk. That is why there are people with Starquests shoehorning 4g63's into them. Why would they give up .6L of displacement and go to the trouble of an engine swap? Because they're gaining a really well-designed DOHC head, multi-port fuel injection, and a motor that doesn't blow head gaskets when pushed.

It's also not that hard to find a 4g63 wideblock. It's very easy to find a 4g64 wideblock. I'd say, it's probably easier to find than a Starquest motor in good condition. They're not very expensive either. Given the enormous technical advantages of the 4g63, it's no contest versus the Starquest motor.

The 4g63 is itself a tank. They'll handle over 500 hp with stock internals.
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