Hi,
for those who did not follow my "how much oil" thread: My Viggen uses excessive amounts of oil.
Today, we did a "pressure loss test" (not a compression test), and all 4 cylinders proved to be faulty: Pressure loss was 32%-22%-38%-26%, 20% being the tolreance. On the third cylinder, we could really hear the air "swoosh" trough the oil sump. So the piston rings seam to be deffective.
My Saab dealer wants to sell me a brand new base engine, delivered completely assembled from Saab, including crank and pistons. Just the head/cams/etc need to be installed, then the whole lump can be reimplanted into the car. This is not much work (1200 EURO), but the block cost 3500 EURO including the little bits.
Those 4700 EURO seamed a little steep to me, so
I phoned around a little bit and mailed to Fredrik at MapTun. MapTun and Gasparatos (www.saabtuning.de) told me that they think the stock pistons of the B235R are to weak to stand much more than 100hp/litre. They want me to replace the pistons with either Saab 9000 2.3T pistons or forged pistons. This action requires to redo the crank and the cylinders (I don´t exactly know the english terms). The total cost will be roughly the same than the new engine (3500 EURO if I use the forged pistons, a little less with the 9000 pistons). My car warranty will pay up to 5000 EURO (all the work, 70% of the parts), so the question really is: Which is the better alternative?
Thanks,
Philip
for those who did not follow my "how much oil" thread: My Viggen uses excessive amounts of oil.
Today, we did a "pressure loss test" (not a compression test), and all 4 cylinders proved to be faulty: Pressure loss was 32%-22%-38%-26%, 20% being the tolreance. On the third cylinder, we could really hear the air "swoosh" trough the oil sump. So the piston rings seam to be deffective.
My Saab dealer wants to sell me a brand new base engine, delivered completely assembled from Saab, including crank and pistons. Just the head/cams/etc need to be installed, then the whole lump can be reimplanted into the car. This is not much work (1200 EURO), but the block cost 3500 EURO including the little bits.
Those 4700 EURO seamed a little steep to me, so
I phoned around a little bit and mailed to Fredrik at MapTun. MapTun and Gasparatos (www.saabtuning.de) told me that they think the stock pistons of the B235R are to weak to stand much more than 100hp/litre. They want me to replace the pistons with either Saab 9000 2.3T pistons or forged pistons. This action requires to redo the crank and the cylinders (I don´t exactly know the english terms). The total cost will be roughly the same than the new engine (3500 EURO if I use the forged pistons, a little less with the 9000 pistons). My car warranty will pay up to 5000 EURO (all the work, 70% of the parts), so the question really is: Which is the better alternative?
Thanks,
Philip