New Guy
- Thread starter larrym
- Start date
yes welcome to the forum!
what are your goals and plans?
what are your goals and plans?
larrym
Member
I've built 1 other motor but pretty handy and enjoy the process, rebuilt the pesky 200R4 transmission a couple years ago.
Its got about dozen passes at the track running low 12's best pass was 11.8 at 117 tranny still works great.
Last time it was on the Dyno it put 420 hp to the wheels with 450 ft pd.
I'm looking to freshen it up and add a roller cam, the heads were done last year after I lifted a head, I got a little greedy with the boost it spiked to 28 psi on a tuning expedition.
Figured I might as well add bearings to the rotating assembly while doing the cam, I did the rear main seal this spring and the bearing looked like didn't have much life left. I'm hoping I catch it before there is any real damage to the crank and that I don't need to replace the cam bearings. Compression test results where good 160, 160, 165, 155, 160, 160
My goal is easy 11.5 ets with about 22 psi of boost, rather than the 26 I need for 11.8
Its got about dozen passes at the track running low 12's best pass was 11.8 at 117 tranny still works great.
Last time it was on the Dyno it put 420 hp to the wheels with 450 ft pd.
I'm looking to freshen it up and add a roller cam, the heads were done last year after I lifted a head, I got a little greedy with the boost it spiked to 28 psi on a tuning expedition.
Figured I might as well add bearings to the rotating assembly while doing the cam, I did the rear main seal this spring and the bearing looked like didn't have much life left. I'm hoping I catch it before there is any real damage to the crank and that I don't need to replace the cam bearings. Compression test results where good 160, 160, 165, 155, 160, 160
My goal is easy 11.5 ets with about 22 psi of boost, rather than the 26 I need for 11.8
now i know this is just my point of view, but I've always been rather impressed with the results those turbo Buick cars got from such low displacement engines and always wondered why darn few guys figured out how to adapt a similar but larger turbo to a 383 small block , to make some type of killer turbo clone to those cars
larrym said:I've built 1 other motor but pretty handy and enjoy the process, rebuilt the pesky 200R4 transmission a couple years ago.
You should have a good idea what your in for then, if you have been thru one motor. I'm looking to change from a TH350 to the 200-4R and building the trans myself to handle 500 HP for my TBucket. Any tips you learned while rebuilding your 200-4R ??? What resources did you use.....books, video, etc ??? Did you need any special tools ?
Its got about dozen passes at the track running low 12's best pass was 11.8 at 117 tranny still works great.
Last time it was on the Dyno it put 420 hp to the wheels with 450 ft pd.
Looks like you must have done something right then !
I'm looking to freshen it up and add a roller cam, the heads were done last year after I lifted a head, I got a little greedy with the boost it spiked to 28 psi on a tuning expedition.
Figured I might as well add bearings to the rotating assembly while doing the cam, I did the rear main seal this spring and the bearing looked like didn't have much life left. I'm hoping I catch it before there is any real damage to the crank and that I don't need to replace the cam bearings. Compression test results where good 160, 160, 165, 155, 160, 160
Are you planning on pulling the motor out of the car or trying to re-freshen it in the car ? Seem like you would be oh-so-close, it would be a shame not to change the cam bearings....unless you are not pulling the motor out of the car.
My goal is easy 11.5 ets with about 22 psi of boost, rather than the 26 I need for 11.8
larrym
Member
Indycars said:larrym said:I've built 1 other motor but pretty handy and enjoy the process, rebuilt the pesky 200R4 transmission a couple years ago.
You should have a good idea what your in for then, if you have been thru one motor. I'm looking to change from a TH350 to the 200-4R and building the trans myself to handle 500 HP for my TBucket. Any tips you learned while rebuilding your 200-4R ??? What resources did you use.....books, video, etc ??? Did you need any special tools ?
Its got about dozen passes at the track running low 12's best pass was 11.8 at 117 tranny still works great.
Last time it was on the Dyno it put 420 hp to the wheels with 450 ft pd.
Looks like you must have done something right then !
I'm looking to freshen it up and add a roller cam, the heads were done last year after I lifted a head, I got a little greedy with the boost it spiked to 28 psi on a tuning expedition.
Figured I might as well add bearings to the rotating assembly while doing the cam, I did the rear main seal this spring and the bearing looked like didn't have much life left. I'm hoping I catch it before there is any real damage to the crank and that I don't need to replace the cam bearings. Compression test results where good 160, 160, 165, 155, 160, 160
Are you planning on pulling the motor out of the car or trying to re-freshen it in the car ? Seem like you would be oh-so-close, it would be a shame not to change the cam bearings....unless you are not pulling the motor out of the car.
My goal is easy 11.5 ets with about 22 psi of boost, rather than the 26 I need for 11.8
As for a resource for the 200R4 pick up a manual from CK performance http://www.ckperformance.com/resources/ ... ANUAL.html
And here is a good read also.
http://www.turbobuick.com/forums/transm ... 2004r.html
There are lots of upgrade parts available, at 500hp I would recommend a billet forward drum at least one of the weak spots out of the box.
The motor is coming out.
As for the cam bearings I didn't want to bring the block in to the machine shop and have been told its not an easy process for the DIY guy. If they need it they will come out but this is just a freshen up and inspection not a complete overhaul. I have my eyes on a block and a stroker kit for my next build bump it up to 250 cubes