Help with TH-350 on a Mazda RX-7
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Help with TH-350 on a Mazda RX-7 To make a long story short... i have a 93' RX-7 with a 3 speed th350 tranny conversion. Drove AMAZING!!!! for awhile, transbrake iand ratchet shifting s def a new experience... recently the car began to shake like crazy. AFter taking it to KDR i found out the bell housing is cracked damaged fairly bad. Basically Im planning on buying a new tranny that should bolt up to the same adapter plate thats on there right now. I was told its a B.O.P. (Buick, olds. pontiac) th350.
I'm posting on this site because there seems to be a much greater knowledge of these trannys around here.
Questions:
- I want another gear for the highway, is a TH 200-4r A direct swap for a th-350?
- Do you recommend solid mounting the trans on the body? or should you use some kind of bushing?
- Does anyone have a built up Th 200-4r for sale for a decent price?
I've seen them on the internet for ~$1700 but I'm a current student and hope I can find one with at least a stronger casing for under $1000.
I want to get my car back ASAP!! so any help would be greatly appreciated!!
SUSPENSION
R1 Front Strut Tower Bar
Tokico Shocks (5-way Adjustable)
H&R Springs
RaceShop Roll Bar
Toe Links (not installed yet)
Trailing Arms (not installed yet)
RX7.com Diff Bushings
Diff. Brace
KAAZ 1.5 LSD
DRIVETRAIN
TH350 Transmission (fully built, w/ Trans Brake)
5500 Racing Torque Convertor (Edge Racing)
B&M Pro Ratchet
ENGINE
SS Downpipe
SS Midpipe
Racing Beat Catback
Pettit AST
Race/Street Port (HUGE)
88 High Compression Rotors
Racing Seals
180 Thermostat
Silicone Hose Replacement
XS Engineering T04E Single Turbo (Garrett)
Cast Ductile Iron Exhaust Manifold
HKS Racing Wastegate with 50mm valve
A'PEXi Twin Chamber Blow of Valve
K&N Air Filter
M2 Large (Racing) intercooler
FUEL SYSTEM
1600cc Secondary Injectors
KRD Fuel Rail
Supra TT Fuel Pump
Aeromotive FPR
I'm posting on this site because there seems to be a much greater knowledge of these trannys around here.
Questions:
- I want another gear for the highway, is a TH 200-4r A direct swap for a th-350?
- Do you recommend solid mounting the trans on the body? or should you use some kind of bushing?
- Does anyone have a built up Th 200-4r for sale for a decent price?
I've seen them on the internet for ~$1700 but I'm a current student and hope I can find one with at least a stronger casing for under $1000.
I want to get my car back ASAP!! so any help would be greatly appreciated!!
SUSPENSION
R1 Front Strut Tower Bar
Tokico Shocks (5-way Adjustable)
H&R Springs
RaceShop Roll Bar
Toe Links (not installed yet)
Trailing Arms (not installed yet)
RX7.com Diff Bushings
Diff. Brace
KAAZ 1.5 LSD
DRIVETRAIN
TH350 Transmission (fully built, w/ Trans Brake)
5500 Racing Torque Convertor (Edge Racing)
B&M Pro Ratchet
ENGINE
SS Downpipe
SS Midpipe
Racing Beat Catback
Pettit AST
Race/Street Port (HUGE)
88 High Compression Rotors
Racing Seals
180 Thermostat
Silicone Hose Replacement
XS Engineering T04E Single Turbo (Garrett)
Cast Ductile Iron Exhaust Manifold
HKS Racing Wastegate with 50mm valve
A'PEXi Twin Chamber Blow of Valve
K&N Air Filter
M2 Large (Racing) intercooler
FUEL SYSTEM
1600cc Secondary Injectors
KRD Fuel Rail
Supra TT Fuel Pump
Aeromotive FPR
Thread Starter
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Joined: Jun 2010
Posts: 9
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bump someone please help!
Can I make the th200-4r work inplace of the th350???
I have a custom torque converter to work with the th350 from edge racing.. could I use the same if I decide to put a 200-4r in?
Can I make the th200-4r work inplace of the th350???
I have a custom torque converter to work with the th350 from edge racing.. could I use the same if I decide to put a 200-4r in?
Thread Starter
Registered User
Joined: Jun 2010
Posts: 9
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Thanks for the response... few more questions for anyone who is willing to answer
Is the th2004r onlyi a direct replacement for short-tailed th350's?
Would it be beneficial to put some kind of support brace from the trans to the engine? or would that cause the casing to break easier?
Is the th2004r onlyi a direct replacement for short-tailed th350's?
Would it be beneficial to put some kind of support brace from the trans to the engine? or would that cause the casing to break easier?
I've done the 200-4R's in the RX-7's.
You can use your same driveshaft assuming you have a short tail TH350.
You will have to move the mount back about 6" for the 200-4R from your current location.
I would hammer the floorpan around the servo area for clearance.
Most 200-4Rs have a universal pattern so no adapter is needed. They do have a fairly robust bellhousing. Thicker than a TH350.
You will have to setup a TV cable.
As stated the converters are different.
The 200-4R is a great trans for the RX-7. Fits well, gives a good gear spread, and has a good OD ratio.
You can use your same driveshaft assuming you have a short tail TH350.
You will have to move the mount back about 6" for the 200-4R from your current location.
I would hammer the floorpan around the servo area for clearance.
Most 200-4Rs have a universal pattern so no adapter is needed. They do have a fairly robust bellhousing. Thicker than a TH350.
You will have to setup a TV cable.
As stated the converters are different.
The 200-4R is a great trans for the RX-7. Fits well, gives a good gear spread, and has a good OD ratio.
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Thread Starter
Registered User
Joined: Jun 2010
Posts: 9
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Ok one more noob question for you guys.. The current Th350 I have in my car has no clutch and a b&m proratchet so I have to pull back on the ratchet to shift. Do I need a full reverse manuel valve body for the th2004r I'm going to put it.
Basically I pull back the ratchet to shift, does that mean I currently have a full reverse manuel valve body or an automatic?
Basically I pull back the ratchet to shift, does that mean I currently have a full reverse manuel valve body or an automatic?
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