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hello, i hope some one can help me out,
i have a 202 red motor in my HR that runs, bit heavy on fuel, i have a bare 186 block that is out of a HR, and i have a complete 179 just sitting in the back of the shed, i would like to now if i can put all the internals from the 179 into the 186 block and use the head off the 202 on the 186. thanks for the help
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The only internal parts that will not interchange between the 179 & the 186 are the pistons & rings, because the 179 has a smaller bore size. The opposite would work because you could bore the smaller block to match the larger pistons, but not vice versa.
The 202 head will fit the 186 as long as you use the 202s pushrods as well. Why would you do that, the 186 has fully adjustable valve gear ?
Get some new 186+ pistons & rings & use the rest of the 179 bits to rebuild a fresh motor.
Dr Terry
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When calculating a car restoration budget, be as accurate as you can & then double the final figure. It will be closer to the truth. |
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thanks for the help, the reason im wantting to use the head off the 202 is it has had alot of porting done to it.
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"head work".....Hence being heavy on fuel? Not going to be much difference I think.
Jim in Adelaide.. |
Jim in Adelaide.. |
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the norm would be to put a smaller ci head on, ie 327 heads onto a 350.
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There is no difference in the combustion chamber size of stock 179, 186 & 202 heads.
Dr Terry
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Dr Terry ,he has said they are ported.Not all the same now.
Jim in Adelaide.. |
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A porting job doesn't necessarily change the combustion size or shape.
Dr Terry
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When calculating a car restoration budget, be as accurate as you can & then double the final figure. It will be closer to the truth. |
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It does fuel consumption...more air more fuel,and he says that it uses too much ,but he wants to keep that head on it,to me Little to no difference,chamber size will stay the same also.No point.
Jim in Adelaide.. |
Jim in Adelaide.. |
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quote:
Originally posted by jim
It does fuel consumption...more air more fuel,and he says that it uses too much ,but he wants to keep that head on it,to me Little to no difference,chamber size will stay the same also.No point.
Jim in Adelaide..
Totally agree Jim, but my point was that big &/or polished ports doesn't necessarily mean any change in combustion chamber size & a resultant change in compression ratio. You are correct, this guy wants the best of both worlds: a head & cam package which makes peak HP at 3,000 to 4,000 RPM & good fuel economy, it's not gunna happen. If you want good economy, keep it as stock as a rock, especially the cam, head & carby combo & then tune accordingly. Most importantly watch your tyre size & diff ratio & the weight of your right foot. Dr Terry. _________________________________________ When calculating a car restoration budget, be as accurate as you can & then double the final figure. It will be closer to the truth. |
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thanks for the help, i am going to go with the 186, it suits the era of the car, the ported head and cam will also go with the motor, it also has twin carbs so i will have to wear the cost of running the car.
thanks again
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oh.!!!! twin carbs!!...are you ready Dr Terry?....lol
Jim in Adelaide.. |
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Twin-carbs, and you want fuel economy !!!!
Dr Terry
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When calculating a car restoration budget, be as accurate as you can & then double the final figure. It will be closer to the truth. |
If at first you don't succeed, just call it Version 1.0 |
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