56 replies to this topic

[IronmanG]

Sonnik,consider a plenum chamber with a single throttle body.Multiple bodies open to give massive air at the slightest opening which may not be ideal for a road car.The ECU tuning comes largely from the tuning software and familiarity with it as well as a good knowledge of how it works together.Apologies if you know this.Steve..

I would have gone this route in hindsight. Alex at car kitchen can fashion something up.
ECU wise I found a rolling road that knows their way around the software. It runs really well. It could do with another couple of hours probably to make it spot on all the way through the rev range
I still think there is untapped potential whether its the cam choice or as you said Steve the throttle bodies are simply too big. Interestingly SC now use 38 instead of 40mm despite me being told by John 40s are spot on

Edited by IronmanG, 28 June 2022 - 06:49 PM.

[IronmanG]

I did talk to a guy at reverie called Simon about making a plenum. They have some on the shelf

[sonscar]

My 1800 cc MGB breaths through a single 67mm throttle and 100% MAP is at approx 85% opening so is possibly too large,Steve..

[IronmanG]

My 1800 cc MGB breaths through a single 67mm throttle and 100% MAP is at approx 85% opening so is possibly too large,Steve..

The billet 7 uses 36mm
Mines 40mm
Oz and I reckon 34 would be plenty for ITBs

[IronmanG]

Just googled it. According to the jenvey website 30hp per cylinder is 38mm but thats revving to 9000. So easily go down to 36/34

[sonikk4]

Sonnik,consider a plenum chamber with a single throttle body.Multiple bodies open to give massive air at the slightest opening which may not be ideal for a road car.The ECU tuning comes largely from the tuning software and familiarity with it as well as a good knowledge of how it works together.Apologies if you know this.Steve..

I would have gone this route in hindsight. Alex at car kitchen can fashion something up.
ECU wise I found a rolling road that knows their way around the software. It runs really well. It could do with another couple of hours probably to make it spot on all the way through the rev range
I still think there is untapped potential whether its the cam choice or as you said Steve the throttle bodies are simply too big. Interestingly SC now use 38 instead of 40mm despite me being told by John 40s are spot on

I understand where you are coming from with this Steve but the whole idea behind my particular build is for the look as it’s something I have hankered for after watching a Arden 8 port giving it the beans through throttle bodies.

It’s a toy, not a daily driver. Also the Delta ECU is not the best so having something that is more user friendly like the Haltech ECU will be my way fwd with all of this.

Grahams build has ITB’s and a different style of 7 port head which again he bought for a certain look and having seen it before it went into his car it does look good.

We have gone to the same engine builder who a very good reputation and I have been picking his brain as I have gone along and also using the Info gained from Graham and the angst he has gone through. There have been other issues as well for example wrong sized injectors from SC and so on certainly for Graham.

[IronmanG]

Sonnik,consider a plenum chamber with a single throttle body.Multiple bodies open to give massive air at the slightest opening which may not be ideal for a road car.The ECU tuning comes largely from the tuning software and familiarity with it as well as a good knowledge of how it works together.Apologies if you know this.Steve..

I would have gone this route in hindsight. Alex at car kitchen can fashion something up.
ECU wise I found a rolling road that knows their way around the software. It runs really well. It could do with another couple of hours probably to make it spot on all the way through the rev range
I still think there is untapped potential whether its the cam choice or as you said Steve the throttle bodies are simply too big. Interestingly SC now use 38 instead of 40mm despite me being told by John 40s are spot on

I understand where you are coming from with this Steve but the whole idea behind my particular build is for the look as it’s something I have hankered for after watching a Arden 8 port giving it the beans through throttle bodies.

It’s a toy, not a daily driver. Also the Delta ECU is not the best so having something that is more user friendly like the Haltech ECU will be my way fwd with all of this.

Grahams build has ITB’s and a different style of 7 port head which again he bought for a certain look and having seen it before it went into his car it does look good.

We have gone to the same engine builder who a very good reputation and I have been picking his brain as I have gone along and also using the Info gained from Graham and the angst he has gone through. There have been other issues as well for example wrong sized injectors from SC and so on certainly for Graham.

Its in and running now just a year later than it should have been. So back to the original post and I will stick with what I said originally. Is it good to drive. Yes. Its bloody brilliant. Is it better than a similar build 5 porter. Maybe marginally. Was it worth the extra money and wait and grief. 100% NO.
Its not a cost effective way to get grunt when 5 porters seem to break 100hp regularly anyway

But I do like the look and sound of it

Edited by IronmanG, 28 June 2022 - 07:56 PM.

[joyce1bro]

Humor me,what did you find disappointing?Short manifold with port injection,plenum with single throttle body and it could be ideal.Bear in mind that I have two Megasquirt equipped cars which have been injected for 17 years or so(1800 MGB and 3.5 rover V8)Only the cost prevents me buying a 7port for my MGB.Steve..

For me, for the road the cost is prohibitive. A well sorted 5 port really isn't that far behind and is way cheaper. For track days, racing etc different kettle of fish.

Can I ask if yours was injected? And if so what ECU you were using?

Mine?
Injected yes. Delta 400 from SC

And off the back of what has happened to Graham, steer clear of the Delta ECU and go for Haltech instead.

Unfortunately for me I will potentially have similar issues as I have the SC Billet Aluminium seven port with their Billet Aluminium throttle bodies. This engine is also being built by Oz who built Grahams. Mine is somewhat behind but hoping to have it complete this year and hopefully running.

Once it’s fully up and running and as funds allow I will be changing to Haltech. A far superior ecu and more operator friendly as well.

I have a brand new SC 7 port with AT power ITB’s which are being put on to a built block as we speak. I’m in NZ and was going to run a Haltech but I got a killer deal from my tuner on a Link G4X Monsoon so I’m running that. Both Link and Haltech are very common here in NZ and my tuner specialises in both.

Humor me,what did you find disappointing?Short manifold with port injection,plenum with single throttle body and it could be ideal.Bear in mind that I have two Megasquirt equipped cars which have been injected for 17 years or so(1800 MGB and 3.5 rover V8)Only the cost prevents me buying a 7port for my MGB.Steve..

For me, for the road the cost is prohibitive. A well sorted 5 port really isn't that far behind and is way cheaper. For track days, racing etc different kettle of fish.

Can I ask if yours was injected? And if so what ECU you were using?

Mine?
Injected yes. Delta 400 from SC

And off the back of what has happened to Graham, steer clear of the Delta ECU and go for Haltech instead.

Unfortunately for me I will potentially have similar issues as I have the SC Billet Aluminium seven port with their Billet Aluminium throttle bodies. This engine is also being built by Oz who built Grahams. Mine is somewhat behind but hoping to have it complete this year and hopefully running.

Once it’s fully up and running and as funds allow I will be changing to Haltech. A far superior ecu and more operator friendly as well.

I have a brand new SC 7 port with AT power ITB’s which are being put on to a built block as we speak. I’m in NZ and was going to run a Haltech but I got a killer deal from my tuner on a Link G4X Monsoon so I’m running that. Both Link and Haltech are very common here in NZ and my tuner specialises in both.

My current engine was a built 5 port and produced 76kws at the front wheels on a new mainline dyno with programmable ecu igniton system. This was/is a great engine but at cruise speed it didn’t like it. It loved either foot flat or not at all. Injection and a proper ecu will fix that.

Attached Files

•  E1B2699A-3C30-4763-AD37-BEB007896B59.jpeg   171.6K   5 downloads

Edited by joyce1bro, 28 June 2022 - 08:28 PM.

[IronmanG]

Humor me,what did you find disappointing?Short manifold with port injection,plenum with single throttle body and it could be ideal.Bear in mind that I have two Megasquirt equipped cars which have been injected for 17 years or so(1800 MGB and 3.5 rover V8)Only the cost prevents me buying a 7port for my MGB.Steve..

For me, for the road the cost is prohibitive. A well sorted 5 port really isn't that far behind and is way cheaper. For track days, racing etc different kettle of fish.

Can I ask if yours was injected? And if so what ECU you were using?

Mine?
Injected yes. Delta 400 from SC

And off the back of what has happened to Graham, steer clear of the Delta ECU and go for Haltech instead.

Unfortunately for me I will potentially have similar issues as I have the SC Billet Aluminium seven port with their Billet Aluminium throttle bodies. This engine is also being built by Oz who built Grahams. Mine is somewhat behind but hoping to have it complete this year and hopefully running.

Once it’s fully up and running and as funds allow I will be changing to Haltech. A far superior ecu and more operator friendly as well.

I have a brand new SC 7 port with AT power ITB’s which are being put on to a built block as we speak. I’m in NZ and was going to run a Haltech but I got a killer deal from my tuner on a Link G4X Monsoon so I’m running that. Both Link and Haltech are very common here in NZ and my tuner specialises in both.

Clubmam front end?

[joyce1bro]

No not a club man, I have a fibreglass front end. It’s my sunny day wknd, club day car.

Attached Files

•  C1AEFEE6-EC40-4CC5-B6EF-CA2304FB744E.jpeg   89.26K   5 downloads
•  CF359B54-3D9A-49E8-8DD0-AEE3D0E75FB1.jpeg   111.34K   6 downloads

[IronmanG]

Ah ok. That have more clearance than standard car in front of the trumpets? What filter you putting on?

[joyce1bro]

Ah ok. That have more clearance than standard car in front of the trumpets? What filter you putting on?

Not sure on a filter yet. I have different lengths of runners as well for testing so that’s also good. I’ll just get it tuned and then sort a filter. It’ll more then likely be a shallow ITG one

[IronmanG]

The 40 mm internal height measurement one?

https://www.demon-tw...wE&gclsrc=aw.ds

Edited by IronmanG, 28 June 2022 - 09:09 PM.

[joyce1bro]

The 40 mm internal height measurement one?

https://www.demon-tw...wE&gclsrc=aw.ds

Yeah I spose so. I’ll see how everything sits and go from there. I’ll try get the biggest one I can for the space available

[IronmanG]

Keep us posted.