#1
Posted 13 March 2019 - 03:31 PM
#2
Posted 13 March 2019 - 03:34 PM
it fits? then what is the problem?
#3
Posted 13 March 2019 - 04:11 PM
Edited by Mrplastic, 17 March 2019 - 10:58 AM.
#4
Posted 13 March 2019 - 05:14 PM
998 engine stays are shoter than the later 1275spi/carb cross ones as the engine was moved 1/2" forward , is the mainflow manifold for a 998 or 1275 if a 1275 might be the wrong shape??
#5
Posted 13 March 2019 - 09:58 PM
#6
Posted 13 March 2019 - 10:05 PM
#7
Posted 13 March 2019 - 10:21 PM
#8
Posted 14 March 2019 - 12:11 AM
still dont see an issue you will just have a really well fitted exhaust and will not have an hanging down issues.
#9
Posted 14 March 2019 - 11:41 AM
The issue you have is that the HIF (1990 onwards) carb equipped engines have the engine mounts 1/2 inch forward than previous frames.
This... I had the same problem... Fitting an spi sourced subframe sorted clearance issues perfectly...
Edited by wile e coyote, 14 March 2019 - 11:43 AM.
#10
Posted 14 March 2019 - 05:41 PM
If it is really close it may hit the body which will cause a nasty vibration when accelerating.
Get the gas torch out, heat it up locally and bend it a bit. That's what I do if the pipe hits the body. I usually wedge a piece of wood a bit further back between body and pipe, then heat it locally around the joint between manifold and exhaust pipe whilst levering it with a pry bar. A but brutal, perhaps, but it does work.
#11
Posted 14 March 2019 - 06:05 PM
Its move the exhaust or change the bulkhead and move the engine back a little bit.
.or as suggested above, find an inlet manifold that's shorter or angles the carb a little higher to clear the bulkhead ?
#12
Posted 14 March 2019 - 08:35 PM
Appreciate all the advice, might have to go down both routes, bend exhaust and change manifold but will start with bending exhaust.
#13
Posted 16 March 2019 - 12:26 PM
I'd set about altering the pancake. Far easier than trying to bend 3 exhaust down pipes.
#14
Posted 16 March 2019 - 12:34 PM
More of a problem now is that the car won't start. i installed a switch to break the contact for the electric fuel pump. security idea. a couple of times i've forgotton to turn it on. When the car stops for lack of fuel it wont start again with the pump switched back on??? there is fuel right up to the carb itself. But the plugs are dry as a bone?? as if the float in the base of the carb is stuck from being too low?? Actually maybe that is exactly it?
#15
Posted 16 March 2019 - 12:48 PM
pancake filters is used need to have the hole at the bottom. but you will get better performance and less noise in the cabin with the standard housing but use a KN filter element inside.
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