6.7L V12 build
#1
6.7L V12 build
I'm waiting for parts to complete the trans swap so I thought I would start this thread to keep a diary of the build process for my 6.7L engine.
The block is away being bored ATM.
I picked the rods up from Norman last week. The pin bushes have been replaced for Chev 0.927" pins, for the KB Chev 305 pistons.
The rod on the left is out of one of Normans race V12's and is spun to 7500rpm. I don't plan on taking this much off my rods. My rod on the Right is 930g and the lightened rod is 837g.
Today I started lightening the con rods. Milling the rod caps.
I'll take a little more off this rod but need to wait untill my new scales arrive. But this is close.
The block is away being bored ATM.
I picked the rods up from Norman last week. The pin bushes have been replaced for Chev 0.927" pins, for the KB Chev 305 pistons.
The rod on the left is out of one of Normans race V12's and is spun to 7500rpm. I don't plan on taking this much off my rods. My rod on the Right is 930g and the lightened rod is 837g.
Today I started lightening the con rods. Milling the rod caps.
I'll take a little more off this rod but need to wait untill my new scales arrive. But this is close.
Last edited by warrjon; 10-15-2016 at 04:02 AM.
The following 6 users liked this post by warrjon:
avern1 (10-15-2016),
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and 1 others liked this post.
#2
#3
#4
Join Date: Jul 2010
Location: Austin tx and Daytona FL.
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warron i like that pin bush with cross oil relief, good idea , is that one of Norms idea?
YES, lighten any thing you think is doable without sacrificing strength, it will pay off when up and running, instant engine response!
i have not YET, seen any one knife edging a V12 crankshaft?
also would be nice to steel shotpeen the rods for tighter surface tension, reducing possible stress cracks.
question; does KB pistons relate to Kieth Black of California racing engines??
YES, lighten any thing you think is doable without sacrificing strength, it will pay off when up and running, instant engine response!
i have not YET, seen any one knife edging a V12 crankshaft?
also would be nice to steel shotpeen the rods for tighter surface tension, reducing possible stress cracks.
question; does KB pistons relate to Kieth Black of California racing engines??
Last edited by ronbros; 10-15-2016 at 02:40 PM.
#6
Yes Keith Black Hypereutectic.
#7
This will be a long slow process as I have a lot projects on the go, so be patient I expect the engine to be ready by Xmas.
I'lll post as much detail of the build as I go.
Project plan
1. Complete 4L60e conversion. (almost done)
- Fabricate dipstick mount
- Fabricate trans dust cover.
- Mount oil cooler and run braided lines.
- Cap off in rad cooler.
- Wire power to TCU and install new fuse block.
- Road test and program TCU
2. Convert existing 5.3L to Megasquirt.
- Replace engine bay wiring harness.
- Megasquirt requires modifying for 6 ignition outputs.
- Plan is to use existing front crank sensor with 36-1 trigger.
- Modify GM 3800 coil modules, remove GM electronics and install BIP373 coil drivers, MS2 will drive these directly.
- MS2 will be installed in old 6CU case and use existing wiring harness.
3. 6.7L build will happen along the way
I'lll post as much detail of the build as I go.
Project plan
1. Complete 4L60e conversion. (almost done)
- Fabricate dipstick mount
- Fabricate trans dust cover.
- Mount oil cooler and run braided lines.
- Cap off in rad cooler.
- Wire power to TCU and install new fuse block.
- Road test and program TCU
2. Convert existing 5.3L to Megasquirt.
- Replace engine bay wiring harness.
- Megasquirt requires modifying for 6 ignition outputs.
- Plan is to use existing front crank sensor with 36-1 trigger.
- Modify GM 3800 coil modules, remove GM electronics and install BIP373 coil drivers, MS2 will drive these directly.
- MS2 will be installed in old 6CU case and use existing wiring harness.
3. 6.7L build will happen along the way
Last edited by warrjon; 10-16-2016 at 04:38 AM.
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#8
Join Date: Jul 2010
Location: Austin tx and Daytona FL.
Posts: 7,362
Received 1,236 Likes
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This will be a long slow process as I have a lot projects on the go, so be patient I expect the engine to be ready by Xmas.
I'lll post as much detail of the build as I go.
Project plan
1. Complete 4L60e conversion. (almost done)
- Fabricate dipstick mount
- Fabricate trans dust cover.
- Mount oil cooler and run braided lines.
- Cap off in rad cooler.
- Wire power to TCU and install new fuse block.
- Road test and program TCU
2. Convert existing 5.3L to Megasquirt.
- Replace engine bay wiring harness.
- Megasquirt requires modifying for 6 ignition outputs.
- Plan is to use existing front crank sensor with 36-1 trigger.
- Modify GM 3800 coil modules, remove GM electronics and install BIP373 coil drivers, MS2 will drive these directly.
- MS2 will be installed in old 6CU case and use existing wiring harness.
3. 6.7L build will happen along the way
I'lll post as much detail of the build as I go.
Project plan
1. Complete 4L60e conversion. (almost done)
- Fabricate dipstick mount
- Fabricate trans dust cover.
- Mount oil cooler and run braided lines.
- Cap off in rad cooler.
- Wire power to TCU and install new fuse block.
- Road test and program TCU
2. Convert existing 5.3L to Megasquirt.
- Replace engine bay wiring harness.
- Megasquirt requires modifying for 6 ignition outputs.
- Plan is to use existing front crank sensor with 36-1 trigger.
- Modify GM 3800 coil modules, remove GM electronics and install BIP373 coil drivers, MS2 will drive these directly.
- MS2 will be installed in old 6CU case and use existing wiring harness.
3. 6.7L build will happen along the way
as you say; a lot of small time consuming projects, seems i forget what is done , but reading your list brings back thoughts about it!
" ALL things in time"
Ron
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warrjon (10-17-2016)
#9
#10
#11
I spoke to Norman yesterday and my block is now bored ready for the 95mm liners.
I ran a micrometer over all the valves and out of 24 there was 3 in tolerance but only just. All were worn elliptical with the worst 0.002" (0.05mm) under tolerance and very elliptical. So I have ordered a new set of valves. These will be sent to HPC for ceramic coating.
Heads are at my local shop to be bead blasted. I will pick them up and re-shape the chambers myself, before returning the heads to the shop to have the seats recut and heads planed flat.
New fuel injectors arrived today. I ordered 2 sets of Ford Denso injectors, these are off an Jaguar X Type V6 and have a 12 hole nozzle which provides very fine atomization.
I ran a micrometer over all the valves and out of 24 there was 3 in tolerance but only just. All were worn elliptical with the worst 0.002" (0.05mm) under tolerance and very elliptical. So I have ordered a new set of valves. These will be sent to HPC for ceramic coating.
Heads are at my local shop to be bead blasted. I will pick them up and re-shape the chambers myself, before returning the heads to the shop to have the seats recut and heads planed flat.
New fuel injectors arrived today. I ordered 2 sets of Ford Denso injectors, these are off an Jaguar X Type V6 and have a 12 hole nozzle which provides very fine atomization.
Last edited by warrjon; 11-24-2016 at 06:47 PM.
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ronbros (11-24-2016)
#12
A MegaSquirt (MS2) in a old Jaguar 6CU case will run the whole shooting match, this way it'll plug into the original harness through the car. I will have to custom make the engine harness, the new injectors use USCAR connector not the EV1. I will not need the Jaguar injector power resistors so this wiring will be used for the Distributorless ignition wiring.
I have had to significantly modify the MS2 so it will directly drive 6 coils and use the original Marelli VR sensor on the FRONT of the crank. I am also having a custom 36-1 trigger wheel laser cut to fit in the OEM position on the damper where the Marelli 3 tooth wheel is now.
I bought 2 GM DIS modules (off an Aussie VX V6 Commodore), these will have the electronics removed and 3 BIP373 ignition drivers added to each module.
Plan is to get the MS2 running on my original engine. Fuel only to get the VE table tuned, then I'll remove the Marelli and install the distibutorless system.
2 of these will run the engine 1 for each bank, or maybe I will split them not sure yet.
Inside the module base, all this will be gutted and replaced with 3 BIP373's
I have had to significantly modify the MS2 so it will directly drive 6 coils and use the original Marelli VR sensor on the FRONT of the crank. I am also having a custom 36-1 trigger wheel laser cut to fit in the OEM position on the damper where the Marelli 3 tooth wheel is now.
I bought 2 GM DIS modules (off an Aussie VX V6 Commodore), these will have the electronics removed and 3 BIP373 ignition drivers added to each module.
Plan is to get the MS2 running on my original engine. Fuel only to get the VE table tuned, then I'll remove the Marelli and install the distibutorless system.
2 of these will run the engine 1 for each bank, or maybe I will split them not sure yet.
Inside the module base, all this will be gutted and replaced with 3 BIP373's
Last edited by warrjon; 11-24-2016 at 06:50 PM.
#13
Join Date: Jul 2010
Location: Austin tx and Daytona FL.
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Received 1,236 Likes
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I spoke to Norman yesterday and my block is now bored ready for the 95mm liners.
I ran a micrometer over all the valves and out of 24 there was 3 in tolerance but only just. All were worn elliptical with the worst 0.002" (0.05mm) under tolerance and very elliptical. So I have ordered a new set of valves. These will be sent to HPC for ceramic coating.
Heads are at my local shop to be bead blasted. I will pick them up and re-shape the chambers myself, before returning the heads to the shop to have the seats recut and heads planed flat.
New fuel injectors arrived today. I ordered 2 sets of Ford Denso injectors, these are off an Jaguar X Type V6 and have a 12 hole nozzle which provides very fine atomization.
I ran a micrometer over all the valves and out of 24 there was 3 in tolerance but only just. All were worn elliptical with the worst 0.002" (0.05mm) under tolerance and very elliptical. So I have ordered a new set of valves. These will be sent to HPC for ceramic coating.
Heads are at my local shop to be bead blasted. I will pick them up and re-shape the chambers myself, before returning the heads to the shop to have the seats recut and heads planed flat.
New fuel injectors arrived today. I ordered 2 sets of Ford Denso injectors, these are off an Jaguar X Type V6 and have a 12 hole nozzle which provides very fine atomization.
or you will make a new injector harness while you install the MS system?
#14
I'll make new harness, my harness is shot anyway. These injectors use the USCAR connector. I haven't tied them in the 6.0L fuel rail yet but I expect they will fit, if not I'll make a new fuel rail.
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ronbros (11-25-2016)
#15
This is neat stuff warren! I hope it all works as planned... I hope you'll be doing a dynorun
What plans do you habe for the heads? Are you keeping the May swirl chamber/inlet or will you alter/modify it? According to the experts, the pre HE flat type heads are supposed to be the dogs ***** when it comes to heads... Or are you using exactly these?
What plans do you habe for the heads? Are you keeping the May swirl chamber/inlet or will you alter/modify it? According to the experts, the pre HE flat type heads are supposed to be the dogs ***** when it comes to heads... Or are you using exactly these?
#16
This is neat stuff warren! I hope it all works as planned... I hope you'll be doing a dynorun
What plans do you habe for the heads? Are you keeping the May swirl chamber/inlet or will you alter/modify it? According to the experts, the pre HE flat type heads are supposed to be the dogs ***** when it comes to heads... Or are you using exactly these?
What plans do you habe for the heads? Are you keeping the May swirl chamber/inlet or will you alter/modify it? According to the experts, the pre HE flat type heads are supposed to be the dogs ***** when it comes to heads... Or are you using exactly these?
But the ignition table needs to be setup correctly. The MS2 has the facility for a knock sensor, I might add this later if I can get it work reliably.
The flat heads are the easiest to get power from. I will be using the stock 6.0L heads. With the increase in capacity I need to increase chamber volume by about 8cc ( to keep CR at 11:1) this will be taken from the head. Head work will not be drastic just a smoothing and blending.
The plan is to de-shroud the Intake valve. Believe it or not this is shrouded worse than the exhaust valve (in the 6.0L head) especially at low lift. Then profile the chamber to aid mixture suspension. Unfortunately its all a compromise. Good low to midrange power needs lots of swirl to keep the mixture Homogeneous, this swirl can be detrimental to peak power.
Anyway my plan is to build for good midrange and let peak power be what it end up.
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ronbros (11-25-2016)
#17
#18
Why use the GM coils? Ford and Chrysler coils are "dumb" and don't need to have any circuitry removed. For my MS conversion on a 1966 S Type I used a single coil pack from a 2005 Ford Taurus.
That pack works well, and can give a big spark. I tested it with some stripped end plug wires and I was able to get it jump a nearly 3/4" gap. Quite the spark!
That pack works well, and can give a big spark. I tested it with some stripped end plug wires and I was able to get it jump a nearly 3/4" gap. Quite the spark!
#19
I did find the AEM wideband sensor much superior to the Innovate LC-1. No calibrations needed for a start!
Last edited by Jagboi64; 11-24-2016 at 09:46 PM.
#20
Why use the GM coils? Ford and Chrysler coils are "dumb" and don't need to have any circuitry removed. For my MS conversion on a 1966 S Type I used a single coil pack from a 2005 Ford Taurus.
That pack works well, and can give a big spark. I tested it with some stripped end plug wires and I was able to get it jump a nearly 3/4" gap. Quite the spark!
That pack works well, and can give a big spark. I tested it with some stripped end plug wires and I was able to get it jump a nearly 3/4" gap. Quite the spark!
Isn't the Ford Taurus EDIS
Last edited by warrjon; 11-24-2016 at 11:06 PM.
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ronbros (11-25-2016)