Pinto head wanted
Discussion
Check the shed, have you got a 2.0L pinto head, either standard or already with big ports, I am doing up my old car, I want to big port the valves, and fit fast road cam, etc. I also want to leave the original head alone in case I restore the car to original.
Email me your price, not to expensive please, I still have the kids to feed.
Email me your price, not to expensive please, I still have the kids to feed.
Whats the head going onto?
If its a two litre engine then its no good.
Why? Cos the ports are already way oversized on these engines to start with.
A much better bet would be to get the 1600 head and use that on the 2litre block as the ports are smaller so you get a faster port velocity and hence more air/fuel into the cylinders.
Dont be tempted to open out the ports, theyre already way too large for good fast flow.
Big valves are a waste of effort unless the motor will be a wild cammed one, otherwise just go for a mild upgrade on the cam and just clean up the approach to the existing valves, oh and leave the port floor alone, its a low flow area and grinding metal out of it wont do jack for power increases except to slow the port velocity even more, fuel drop out etc (carbs).
If you need any more help, give me a shout.
Hth
If its a two litre engine then its no good.
Why? Cos the ports are already way oversized on these engines to start with.
A much better bet would be to get the 1600 head and use that on the 2litre block as the ports are smaller so you get a faster port velocity and hence more air/fuel into the cylinders.
Dont be tempted to open out the ports, theyre already way too large for good fast flow.
Big valves are a waste of effort unless the motor will be a wild cammed one, otherwise just go for a mild upgrade on the cam and just clean up the approach to the existing valves, oh and leave the port floor alone, its a low flow area and grinding metal out of it wont do jack for power increases except to slow the port velocity even more, fuel drop out etc (carbs).
If you need any more help, give me a shout.
Hth
listen to deltaf .. all sound advice.
If your head has the tulip backed valves then going for the rimflow flat backed version can offer a few more cfm (cubic feet per minute, a standard airflow measurement for cylinder heads). The smaller chamber volume of the 1600 head raises the compression pressure also, always good for torque.
the offset spark plug design is bad for power, needing alot of advance at high revs, why not ask dave walker at emerald if he's still got his twin spark plug per cylinder version under the bench, if so buy it! (it's a little piece of history..)
If your head has the tulip backed valves then going for the rimflow flat backed version can offer a few more cfm (cubic feet per minute, a standard airflow measurement for cylinder heads). The smaller chamber volume of the 1600 head raises the compression pressure also, always good for torque.
the offset spark plug design is bad for power, needing alot of advance at high revs, why not ask dave walker at emerald if he's still got his twin spark plug per cylinder version under the bench, if so buy it! (it's a little piece of history..)
WOW, ever felt slightly out of your depth, Thanks for the advice guys.
I have a 2.0L pinto with twin Weber 45's and an modified exhaust manifold to give me a 4into1, in a 1981 TVR Tasmin 200 mark 1.
I though that bigger exhaust ports would help the gas flow, ie more in, more out. I was only going to go as far as a fast road cam, nothing silly. From what you say I would do better with a 1600 head, cos the gas has to move faster! and an added bonus is slightly high compression. so far so good? we all want extra BHP which is also what I was hoping to get.
So, will my Weber manifold and exhaust manifold fit a 1600 head? there is little space under the bonnet and I had the exhaust modified to a one-of because nothing off the shelf fits,
Which 1600 head would be best, or are they all the same.
finally how do I contact Dave at Emerald. Kids say they can live on two meals a day..
I have a 2.0L pinto with twin Weber 45's and an modified exhaust manifold to give me a 4into1, in a 1981 TVR Tasmin 200 mark 1.
I though that bigger exhaust ports would help the gas flow, ie more in, more out. I was only going to go as far as a fast road cam, nothing silly. From what you say I would do better with a 1600 head, cos the gas has to move faster! and an added bonus is slightly high compression. so far so good? we all want extra BHP which is also what I was hoping to get.
So, will my Weber manifold and exhaust manifold fit a 1600 head? there is little space under the bonnet and I had the exhaust modified to a one-of because nothing off the shelf fits,
Which 1600 head would be best, or are they all the same.
finally how do I contact Dave at Emerald. Kids say they can live on two meals a day..
Hi Degz. The 1600 head is dimensionally the same as the 2.0 litre version.
Like Joospeed says, its got a smaller combustion chamber which will raise the CR (swept volume into a smaller space an all that jazz
) which will be good for power.
The weber manifold/carb should go straight on it.
You may need valve seat inserts fitting to allow running on unleaded also...iirc they dont have them as standard.
Dave walker can be found here i think: http://members.aol.com/emeraldm3d/
Also Joospeeds views of the valves are spot on, ye olde rimflow design!
HTH
Like Joospeed says, its got a smaller combustion chamber which will raise the CR (swept volume into a smaller space an all that jazz
) which will be good for power. The weber manifold/carb should go straight on it.
You may need valve seat inserts fitting to allow running on unleaded also...iirc they dont have them as standard.
Dave walker can be found here i think: http://members.aol.com/emeraldm3d/
Also Joospeeds views of the valves are spot on, ye olde rimflow design!
HTH
I read somewhere that the head to get is a 1300 pinto. It has small ports in comparison to the 1.6 and 2.0. You can have it modified to take bigger valves but without ruining gas flow.
IMHO it is worth the money to pay an expert who has had a lot of experience with these heads to do the work - you'll get the job done right first time and you can enjoy using the car rather than developing it.
IMHO it is worth the money to pay an expert who has had a lot of experience with these heads to do the work - you'll get the job done right first time and you can enjoy using the car rather than developing it.
This may work, and it may not.
I know for sure that the 1600 head is way better than the 2000cc unit.
Ive not seen any tests done on a 1300/2000 conversion so i cant really comment on it.
If you want to get the best possible combo, id suggest speaking to a good engine builder and lay your plans out for him to see.
Dont forget to specify your power objectives, but be reasonable about your expected outputs.
I know for sure that the 1600 head is way better than the 2000cc unit.
Ive not seen any tests done on a 1300/2000 conversion so i cant really comment on it.
If you want to get the best possible combo, id suggest speaking to a good engine builder and lay your plans out for him to see.
Dont forget to specify your power objectives, but be reasonable about your expected outputs.
1300 Pinto? Don't think what we in the UK term a Pinto engine (ie, 4-pot SOHC) was made as a 1300, only 1600 and larger.
Pretty sure the smaller capacity 4-pots used in the Pinto (including original 1600) were actually the pushrod engines that we in the UK call Crossflows.
Common over here in a variety of Ford models but probably not so in the US, so guess American jargon differs in respect to this.
Pretty sure the smaller capacity 4-pots used in the Pinto (including original 1600) were actually the pushrod engines that we in the UK call Crossflows.
Common over here in a variety of Ford models but probably not so in the US, so guess American jargon differs in respect to this.
For Pinto bits try asking on www.locostbuilders.co.uk, they are a friendly bunch and might have some freebies to spare. The Sierra is a common donor for Locost builds, but most people do not want the Pinto engine(too big and too heavy), so plenty go spare.
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