Rappeln at 1500 u/min

Hi together I have recently been in possession of a V70i from 1997 with the 144hp petrol. Since the purchase I have been racing in the range of 1,300 to 1,600 revolutions a rappeln from the area motor towards the spray wall but from hearing rather further down. Thought first it would be the crusher sheet, but I have fixed that now and it still rappels. Does anyone know the problem?