CB7 V6 Swap Parts List & Methods

[lokuputha]

So we've talked a lot about the revered V6 swap. What are the parts that need to be manufactured and sourced:

1) Engine mounts: Can original Acura mounts be modified? Would Hasport Help us? 500.00

2) Electronics: I have been told the electronics are not a problem, if we were to switch to a cable throttle from an early model Accord. Should not be a big issue. 500.00

3) Engine & Transmission: We should be able to find wrecked cars. I have seen prices around 3000.00 for the 3.2 Type S motor with 6-speed transmission. 3500.00

4) Cooling: Custom piping would be needed for the radiator, transmission cooling. Sourcing parts should not be difficult. 500.00

5) Brake & Suspension upgrade: Yes, recommended. Higher rate springs & dampers. Wagon brakes should do, with high friction pads, ie. EBC Green Pads. 1000.00

6) Exhaust: Custom downpipe should be able to fit an existing CB7 exhaust system. 150.00

So far: 6150.00 x pi = 19,321.00 (economic cost)

I would so be on this, but Formula SAE is taking up a lot of time. This is a definite future project though. Do the above costs seem reasonable?

[Tnwagn]

So we've talked a lot about the revered V6 swap. What are the parts that need to be manufactured and sourced:

1) Engine mounts: Can original Acura mounts be modified? Would Hasport Help us? 500.00

2) Electronics: I have been told the electronics are not a problem, if we were to switch to a cable throttle from an early model Accord. Should not be a big issue. 500.00

3) Engine & Transmission: We should be able to find wrecked cars. I have seen prices around 3000.00 for the 3.2 Type S motor with 6-speed transmission. 3500.00

4) Cooling: Custom piping would be needed for the radiator, transmission cooling. Sourcing parts should not be difficult. 500.00

5) Brake & Suspension upgrade: Yes, recommended. Higher rate springs & dampers. Wagon brakes should do, with high friction pads, ie. EBC Green Pads. 1000.00

6) Exhaust: Custom downpipe should be able to fit an existing CB7 exhaust system. 150.00

So far: 6150.00 x pi = 19,321.00 (economic cost)

I would so be on this, but Formula SAE is taking up a lot of time. This is a definite future project though. Do the above costs seem reasonable?

1) I think that 500 would sound about right if you were to get something from Hasport. If you just used the mounts from the Acura then it would definitely be less even if you paid someone to weld it up for you.

2) 500 plus some extra would figure out how to do the drive by wire -> cable throttle thing. I've never seen the evidence about that swap but I'm sure that you've read stuff I just haven't seen.

3) Agreed

4) 500 sounds a bit much for radiator and trans cooling But I don't know what that entails.

5) Definitely. I think 1000 should cover the costs of a suspension upgrade.

6) I'd say closer to 200 for that

Multiplying by pi is a pretty economic estimate

[owequitit]

I think some of your cost estimates are optimistic.

But I think your economic adjustment fixes much of that.

[KeeleDesign]

[F22HB]

I would totaly do this if the wiring was simple which I figure I wouldn't be and if I didn't need my cb to be reliable.

[heylookitsdylan]

I would totaly do this if the wiring was simple which I figure I wouldn't be and if I didn't need my cb to be reliable.

Wiring is the least of the troubles....two diagrams and some patience and it wouldnt be that bad, everything else would be a bitch.

and 6150$ for a v6 cb? i'd k swap it before dropping a v6 in it.

At least someone would want to buy it with a k in it....

[lokuputha]

I would totaly do this if the wiring was simple which I figure I wouldn't be and if I didn't need my cb to be reliable.

Wiring is as simple as connecting the dots between the two pinout diagrams. I have spoken with some harness manufacturers, they have quoted me $100.00. Reliability should not be any different than that of a K-series; in fact, considering the low stress nature of the larger more powerful motor, the V6 should be that much more reliable.

Wiring is the least of the troubles....two diagrams and some patience and it wouldnt be that bad, everything else would be a bitch.
and 6150$ for a v6 cb? i'd k swap it before dropping a v6 in it.
At least someone would want to buy it with a k in it....

I would think the V6 swap would offer better power output in a less stressed engine, which should be an attractive package for prospective enthusiasts buyers.

If the engine mounts were available, which from conversations with several manufacturers seems pretty plausible, the V6 swap would be just as easy. If they were to be welded sheet metal rather than billet aluminum, the engine mounts for this swap should be less than $300.00 (as per some manufacturers).

Best K-series - K24: 205hp @ 7000 rpm with 164 lbs-ft @ 4500 rpm
Best J -series - J35: 286hp @ 6200 rpm with 256 lbs-ft @ 5000 rpm
Difference: ..............81hp......................... 92 lbs-ft = considerable!

[lokuputha]

Ebay Link: J-Series Engines - apprx. $1,200USD

I think that is very cheap, considering the power and more importantly the torque curves

[almostJDM]

ill take a J37

[owequitit]

Wiring is as simple as connecting the dots between the two pinout diagrams. I have spoken with some harness manufacturers, they have quoted me $100.00. Reliability should not be any different than that of a K-series; in fact, considering the low stress nature of the larger more powerful motor, the V6 should be that much more reliable.



I would think the V6 swap would offer better power output in a less stressed engine, which should be an attractive package for prospective enthusiasts buyers.

If the engine mounts were available, which from conversations with several manufacturers seems pretty plausible, the V6 swap would be just as easy. If they were to be welded sheet metal rather than billet aluminum, the engine mounts for this swap should be less than $300.00 (as per some manufacturers).

Best K-series - K24: 205hp @ 7000 rpm with 164 lbs-ft @ 4500 rpm
Best J -series - J35: 286hp @ 6200 rpm with 256 lbs-ft @ 5000 rpm
Difference: ..............81hp......................... 92 lbs-ft = considerable!

It should also be noted that most current versions of the J series are underrated.

The J35 in the TL-S is actually much closer to 300HP based on output (about 255-260WHP) and the J35 in the new Accord coupe V6 6 speed is within 3-5 WHP in all spots on the curve, despite its lower compression and use of 87 octane fuel.

So even though one is rated at 268HP and one is rated at 286HP, they are really both closer to 300HP.

Also, it should be noted that on some independent dynos, the J35 in the new 6 speed coupe actually makes more power/torque EVERYWHERE when compared to the VQ35HR in the new G35.

[lokuputha]

Also, it should be noted that on some independent dynos, the J35 in the new 6 speed coupe actually makes more power/torque EVERYWHERE when compared to the VQ35HR in the new G35.

^This is most probably due to the lower friction power loss of the FWD configuration than the RWD system.


We need a 2point6 of the V6 swap to get this going.

I have been speaking with John at www.ExplicitSpeedPerformance.net, and they are willing to help us with the engine mounts. Looking at the prices of their other engine mount kits, this one should be just as affordable. Any CB7tuners near Olympia, Washington that are willing to take this on?

They require a "donor car, motor and transmission, time and money."

[owequitit]

^This is most probably due to the lower friction power loss of the FWD configuration than the RWD system.


We need a 2point6 of the V6 swap to get this going.

I have been speaking with John at www.ExplicitSpeedPerformance.net, and they are willing to help us with the engine mounts. Looking at the prices of their other engine mount kits, this one should be just as affordable. Any CB7tuners near Olympia, Washington that are willing to take this on?

They require a "donor car, motor and transmission, time and money."

It is a possibility, but regardless, that means it is still WAY underrated.

On another dyno, one put 268HP to the hubs, so probably in the low to mid 250's range with wheels and tires on. STILL underrated.

The auto versions with VCM do not seem to be underrated.

[90Cb7sleeper]

kinda off topic, but this was on craiglist in the free section....
http://chattanooga.craigslist.org/zip/477006537.html

[lokuputha]

kinda off topic, but this was on craiglist in the free section....
http://chattanooga.craigslist.org/zip/477006537.html

sweet find,
anyone in GA going to pick this up? would be a good dummy motor to work with for the engine mounts

[KeeleDesign]

i agree the wiring wouldn't be hard at all..
but would we actually have the room for the motor? custome shafts and what not?

if anything has been verified could you keep the parts list on the first post updated ..?