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-   -   4g63 in a rx7 (https://www.rx7club.com/other-engine-conversions-non-v-8-118/4g63-rx7-216603/)

Nihilanthic 09-14-06 11:53 AM


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?

rarson 09-16-06 09:44 PM

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.

pinknuggit 09-17-06 09:27 PM

the 2.0L version of the wideblock is the G63B

rarson 09-18-06 12:20 AM

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.

Tessai 09-20-06 06:47 PM

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?

coltboostin 09-21-06 01:22 AM


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#

Tessai 09-25-06 06:21 PM


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?

krackerx7 09-26-06 02:09 PM


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

Tessai 09-26-06 05:18 PM

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?

hotfd3s 09-26-06 11:57 PM


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.

krackerx7 09-27-06 11:22 PM

its only a 87-88 b2600 there are two versions you want the one with the starter on the drivers side

masao 09-28-06 12:51 PM

Rotary > Crank walk.

DHorner 09-28-06 03:15 PM


Originally Posted by masao
Rotary > Crank walk.

Thats why you use a 6-bolt

slo 09-28-06 03:47 PM

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 shit 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.

rotor vs. piston 10-14-06 08:54 PM

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.

coltboostin 10-14-06 10:26 PM


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..... :bluesuit:

krackerx7 10-25-06 02:14 PM

I have a 88 b2600 bellhousing for sale its the one you need $100 shipped
PM me

coltboostin 10-25-06 02:21 PM

Its the one I already have bolted into the car. :)


But, I may be interested in another-can we work ont hat price?

Whizbang 10-25-06 04:46 PM

the day it starts. you call me!!! or ill MURDER YOU!!!!

:0

coltboostin 10-25-06 05:09 PM


Originally Posted by Low Impedance
the day it starts. you call me!!! or ill MURDER YOU!!!!

:0


Yesir!

:batman:

RotaryAE86 10-29-06 09:21 PM

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)

rarson 10-29-06 11:46 PM

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.

fcdrifter13 10-30-06 12:03 AM

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.

numlock666 10-30-06 02:09 PM

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.

rarson 10-30-06 07:43 PM


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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