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350Matt

3,364 posts

162 months

[news] 
Monday 11th June 2012 quote quote all
Thats a pretty interesting intake

What length intake runners have you gone for?

Also you might want to consider a communication tube between the two plenums as something to try

jwoffshore

337 posts

137 months

[news] 
Monday 11th June 2012 quote quote all
I was thinking the same thing about the intake. Looks very nicely made. Is there enough volume in each plenum? Just asking the question, not trying to say if there is or is not. What heads did you use in the end, given the original topic?

Else

Original Poster:

702 posts

121 months

[news] 
Monday 11th June 2012 quote quote all
Matt,

The runners are approx 7" from the back of the valve to the lip of the bellmouth.







You can just see the link tube, -10, at the back of the plenums in this picture.



Jonathan,

Rob at V8D sold me the heads, he explained at the time how the intake should be designed which i have stuck to it as near as i could.

Andy

Else

Original Poster:

702 posts

121 months

[news] 
Wednesday 25th July 2012 quote quote all
Finished the air filter housing pipework install today. Very pleased with it smile

Just got to tweak the mapping. There's a guy local to me that knows a lot about mapping Motec ECUs apparently so I am going to contact him to see what he can do for mine. Then get the geo set up professionally and I'm done.



By the way, I can't believe nobody wants my old inlet manifold and twin plenum setup, it was the nuts. Have to sell it cos it won't fit my new heads



Edited by Else on Wednesday 25th July 04:32

Else

Original Poster:

702 posts

121 months

[news] 
Wednesday 25th July 2012 quote quote all
Need a bit of advice: I now have an oil catch tank instead of venting the crankcase into the inlet but the little foam filter at the back of the nearside rocker cover is pushing out a little bit of oil. I can pipe this into the catch tank as well but will this cause any problems?
I realise that I probably have positive crankcase pressure now instead of negative as before but will this cause any damage to seals or gaskets?

Thanks Andy
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slideways

3,179 posts

104 months

[news] 
Wednesday 25th July 2012 quote quote all
Else said:
Need a bit of advice: I now have an oil catch tank instead of venting the crankcase into the inlet but the little foam filter at the back of the nearside rocker cover is pushing out a little bit of oil. I can pipe this into the catch tank as well but will this cause any problems?
I realise that I probably have positive crankcase pressure now instead of negative as before but will this cause any damage to seals or gaskets?

Thanks Andy
I had this same issue after my twin turbo install, in fact I had a major oil leak out of the valley, I disconnected the pipe to the catch tank and added another flame trap in place of the oil filler cap and vent boths sides to atmosphere the problem went away immediately,

Edited by slideways on Wednesday 25th July 05:32

carsy

2,007 posts

48 months

[news] 
Wednesday 25th July 2012 quote quote all
That looks like a great piece of work. Be interesting to see what gains it gives.

What size RV8 have you got and what ECU have you gone for.

Very nice indeed. Job to be proud of.

900T-R

19,325 posts

140 months

[news] 
Wednesday 25th July 2012 quote quote all
robrover said:
I think the later post 1976 SD1 Rover heads flowed about 148cfm at the same lift, with Stage 4 Rover heads around 181.

I believe Merlin F85 heads can be maxed out to flow about 185 cfm.
What - that doesn't sound worth the hassle of entirely new castings, at all?

ChimpofDarkness

4,429 posts

62 months

[news] 
Wednesday 25th July 2012 quote quote all
Else said:
By the way, I can't believe nobody wants my old inlet manifold and twin plenum setup, it was the nuts. Have to sell it cos it won't fit my new heads



Edited by Else on Wednesday 25th July 04:32
Wish I could afford it Andy frown

Hope to see you and your car at the Croxley show on August 1st?

Dave.

rev-erend

18,218 posts

167 months

[news] 
Wednesday 25th July 2012 quote quote all
If you have a oil vent pipe from each rocker cover to to catch tank then you can just block the original oil breather on the back of the3 rocker cover.

Make sure the oil vent tank is large .. I bought a small one and its pretty worthless.

Else

Original Poster:

702 posts

121 months

[news] 
Wednesday 25th July 2012 quote quote all
Ian, it's a 5.2 built by V8D and it's running a self installed Motec ECU

Andy

Edited by Else on Wednesday 25th July 10:10

Else

Original Poster:

702 posts

121 months

[news] 
Wednesday 25th July 2012 quote quote all
Make me a sensible offer Dave, I can always say no.

Andy

Kokkolanpoika

66 posts

34 months

[news] 
Monday 17th September 2012 quote quote all
Any update?

Are those heads V8D/Vizard heads? Look like they have been welded seriously..

blitzracing

3,952 posts

103 months

[news] 
Saturday 10th November 2012 quote quote all
A friend of mine has purchased a pair of the Merlin heads to fit a 5ltr motor going into his Ginetta (the thought terrify me- anything over about 200 bhp is really to much for the chassis)- but anyway here a photo of the inlet ports, any ideas what the infill in the corner is for? Its going to produce a nasty little step when it butts up against the manifold?



Edited by blitzracing on Sunday 11th November 16:58

Else

Original Poster:

702 posts

121 months

[news] 
Sunday 11th November 2012 quote quote all
Sorry cant help, didn't go the Merlin route in the end, my heads are modified Rover heads from V8D.

Andy

Else

Original Poster:

702 posts

121 months

[news] 
Sunday 11th November 2012 quote quote all
Kokkolanpoika said:
Any update?

Are those heads V8D/Vizard heads? Look like they have been welded seriously..
Hi Timo, yes and yes.

Andy

griffdude

869 posts

131 months

[news] 
Wednesday 14th November 2012 quote quote all
Was thinking about a set of F85 heads but in the end went with the V8D stage IV heads.

http://www.flickr.com/photos/89816772@N07/81847483...

http://www.flickr.com/photos/89816772@N07/81847474...

davep

589 posts

167 months

[news] 
Wednesday 14th November 2012 quote quote all
griffdude said:
Was thinking about a set of F85 heads but in the end went with the V8D stage IV heads.

http://www.flickr.com/photos/89816772@N07/81847483...

http://www.flickr.com/photos/89816772@N07/81847474...
Nice heads griffdude. Did you go for the Mk1 or Mk2 variant?

Else

Original Poster:

702 posts

121 months

[news] 
Wednesday 14th November 2012 quote quote all
griffdude said:
Was thinking about a set of F85 heads but in the end went with the V8D stage IV heads.

http://www.flickr.com/photos/89816772@N07/81847483...

http://www.flickr.com/photos/89816772@N07/81847474...
Nice mate, what size are the valves?

Andy

GTRene

8,538 posts

107 months

[news] 
Wednesday 14th November 2012 quote quote all
those are some real good looking heads, pretty big valve's and big ports.
it can breath very well me thinks.
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