951 3.0l turbo 8V engine questions
09-16-2009, 04:01 PM
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951 3.0l turbo 8V engine questions
Hello:
I´m from Spain and new on this forum. I´m building a 951 turbo s rallye car. My project is to built an entire welded rollcage from the body
that previously went to acid tank to remove the paint. (I will put photos on this post). I would like to ask help on this forum that I have found and
I seeing there are many people who knows very wells that cars because I have a lot of questions about the engine. Sorry for the long chat and questions.
The project is to built a 3.0l aluminium turbo race engine with 8V cylinderhead and alusil treatment or other if is better.The hp target is to get +-350-370 hp reliable horsepower at 1 bar boost.
Engine
1º At present, I have 2.5 l turbo engine block and cylinderhead, turbo, waterpump,etc. By the moment I see most people use 968 block with
alusil treatment and 2.7 cylinderhead. Is that the best option for the block? and for the cylinderhead? because the 2.5 turbo cylinder heads has ceramic lines
2º For the block I would like to fit 968 crank lightened, titanium pauter rods, custom pistons with coated compatible for alusil (correct me if I'm wrong),
I´m not sure which brand I have to choose keeping the compresion ratio. Other problem I read is the shoulders of the bolts rods for 3.0l crank. Is this configuration Ok?
3º Tell me something about what crankscraper I have to use (the car is only for race)
4º Is possible to fit the 968 waterpump or 951 block
5º Can I fit oil squirters from any 968 engine block?. I have the spare parts catalogue 968 and I don´t see any diferrences about oil squirters. It doesn´t
appears on the catalogue!! or is there someone that make this modification??
6º Who can make the crank weight reduction??, balance, etc
7º Is neccesary to use the damper from 944 S2 engine block with this engine??
8º Is a good option to remove or cut the balance shafts?? and where??
9º the 968 cylinderhead gasket is good to use in a race engine or there is another one better??
10º where can I take the block to make the alusil treatment?? or who is the better proffesional or experimented people to do this??
11º which turbocharger dual ball bearing can I use for a fast response and 350-370 hp?? (GT30,GT28)?? Normal rpm range in this races is 4000-6000 rpm.
For that question I will use a 016R gearbox with LSD 8:31 ring and pinion and 3th,4th and 5th gear from powerhause with ratios 1,58:1(3 gear) 1,23:1 (4 gear) and
1:1 (5 gear), taht is 116,86 miles\hour at 6000 rpm with 64 mm diameter wheels.
12º which exhaust, downpipe??? and from who?? 3 inches, 4 inches?? I think 3" would be better for that horsepowers.
13º which wastegates. I´m thinking tial 46 mm to fit directly on the stock downpipe
I woul need the 968 engine block and the 968 crank to start. If you know any people who has this part I will buy and sell my 951 short block.
This is for the moment (and it is enough). For the future I would upgrade the cylinderhead.
Sorry for my english and thank you very much for all help you can give me.
Regards
I´m from Spain and new on this forum. I´m building a 951 turbo s rallye car. My project is to built an entire welded rollcage from the body
that previously went to acid tank to remove the paint. (I will put photos on this post). I would like to ask help on this forum that I have found and
I seeing there are many people who knows very wells that cars because I have a lot of questions about the engine. Sorry for the long chat and questions.
The project is to built a 3.0l aluminium turbo race engine with 8V cylinderhead and alusil treatment or other if is better.The hp target is to get +-350-370 hp reliable horsepower at 1 bar boost.
Engine
1º At present, I have 2.5 l turbo engine block and cylinderhead, turbo, waterpump,etc. By the moment I see most people use 968 block with
alusil treatment and 2.7 cylinderhead. Is that the best option for the block? and for the cylinderhead? because the 2.5 turbo cylinder heads has ceramic lines
2º For the block I would like to fit 968 crank lightened, titanium pauter rods, custom pistons with coated compatible for alusil (correct me if I'm wrong),
I´m not sure which brand I have to choose keeping the compresion ratio. Other problem I read is the shoulders of the bolts rods for 3.0l crank. Is this configuration Ok?
3º Tell me something about what crankscraper I have to use (the car is only for race)
4º Is possible to fit the 968 waterpump or 951 block
5º Can I fit oil squirters from any 968 engine block?. I have the spare parts catalogue 968 and I don´t see any diferrences about oil squirters. It doesn´t
appears on the catalogue!! or is there someone that make this modification??
6º Who can make the crank weight reduction??, balance, etc
7º Is neccesary to use the damper from 944 S2 engine block with this engine??
8º Is a good option to remove or cut the balance shafts?? and where??
9º the 968 cylinderhead gasket is good to use in a race engine or there is another one better??
10º where can I take the block to make the alusil treatment?? or who is the better proffesional or experimented people to do this??
11º which turbocharger dual ball bearing can I use for a fast response and 350-370 hp?? (GT30,GT28)?? Normal rpm range in this races is 4000-6000 rpm.
For that question I will use a 016R gearbox with LSD 8:31 ring and pinion and 3th,4th and 5th gear from powerhause with ratios 1,58:1(3 gear) 1,23:1 (4 gear) and
1:1 (5 gear), taht is 116,86 miles\hour at 6000 rpm with 64 mm diameter wheels.
12º which exhaust, downpipe??? and from who?? 3 inches, 4 inches?? I think 3" would be better for that horsepowers.
13º which wastegates. I´m thinking tial 46 mm to fit directly on the stock downpipe
I woul need the 968 engine block and the 968 crank to start. If you know any people who has this part I will buy and sell my 951 short block.
This is for the moment (and it is enough). For the future I would upgrade the cylinderhead.
Sorry for my english and thank you very much for all help you can give me.
Regards
