Search found 90 matches

by Prophead
Tue Oct 22, 2019 6:33 pm
Forum: Engines Area
Topic: Front crank oil seal.
Replies: 28
Views: 726

Re: Front crank oil seal.

BTW if the wear groove is not too server Rimmers supply a slightly oversized crank oil seal. I don't know the listing as I called them and mentioned the issue and they sent me the oversized one. 4 track-days and 2000 road miles no leaks.
by Prophead
Wed Oct 02, 2019 7:01 pm
Forum: Engines Area
Topic: 3.9 later intermin Serp Engine project
Replies: 5
Views: 199

Re: 3.9 later intermin Serp Engine project

The engine is going in a track-day car, whilst it's not going to be a screamer or mega power, it will get driven hard in its upper rev bracket so thought it a good idea to get the cross bolting done.
by Prophead
Thu Sep 26, 2019 5:37 pm
Forum: Engines Area
Topic: 3.9 later intermin Serp Engine project
Replies: 5
Views: 199

Re: 3.9 later intermin Serp Engine project

richyb66 wrote:
Thu Sep 26, 2019 8:12 am
I'm running just and alternator and water pump on a serp setup and I repositioned the standard tensioner.

I posted some pictures in this thread:

viewtopic.php?f=12&t=15309&p=117028#p117028

Done over 8k miles on this setup with no issues.
Thanks very useful.
by Prophead
Wed Sep 25, 2019 5:48 pm
Forum: Engines Area
Topic: 3.9 later intermin Serp Engine project
Replies: 5
Views: 199

3.9 later intermin Serp Engine project

Continuing on from my previous post....I've gone and got a late 3.9 interim longblock i.e. serp front end and block casting with provision for cross bolting (but not actually cross bolted). Allegedly the engine has been 'rebuilt' but until it arrives I wont know to what extent. In the meantime I wan...
by Prophead
Tue Sep 17, 2019 8:11 am
Forum: Engines Area
Topic: 4.6 RV8 rough power and trq estimate
Replies: 11
Views: 236

Re: 4.6 RV8 rough power and trq estimate

I used to have a healthy 3,5 litre with ported heads, uprated cam or two and SU´s. At its peak it made 190 hp. I then ditched the SU carbs and manifold and went to Edelbrock Performer and Holley 390. That increased the power to 221 hp. The next step was to replace the short motor with 4,6 stuff. Re...
by Prophead
Tue Sep 17, 2019 8:09 am
Forum: Engines Area
Topic: 4.6 RV8 rough power and trq estimate
Replies: 11
Views: 236

Re: 4.6 RV8 rough power and trq estimate

Well a standard 4.6 produces 222 hp (166 kW; 225 PS) at 4,750 rpm and 300 lb⋅ft (407 N⋅m) at 2,600 rpm so thats where you need to start. That's what I thought. So with a cam and some head work, properly set-up Edelbrock 1404 and Performer manifold, and well set-up / timed Dizzy +250hp is not a big ...
by Prophead
Sun Sep 15, 2019 7:54 pm
Forum: Engines Area
Topic: 4.6 RV8 rough power and trq estimate
Replies: 11
Views: 236

Re: 4.6 RV8 rough power and trq estimate

200 hp I would think. Reason 3.9 fully worked by John Eales with a JE 102 cam which is fairly radical, fully balanced, stage 3 heads yada yada That gives 256 hp at 6600 rpm You have less heads work, less cam and bigger capacity so will not rev as easily which is where my power comes in. Sorry if th...
by Prophead
Sun Sep 15, 2019 7:33 pm
Forum: Engines Area
Topic: 4.6 RV8 rough power and trq estimate
Replies: 11
Views: 236

4.6 RV8 rough power and trq estimate

I am at a cross roads with my current 3.5 engine and am considering other options - budget limited unfortunately. I am thinking of starting over with a standard reconditioned 4.6 long block that might be available to me fairly cheap. I believe it is 9:35 CR. So, my plan would be to use this with:- -...
by Prophead
Mon Aug 27, 2018 9:48 pm
Forum: General Chat Area
Topic: Street tires
Replies: 6
Views: 1907

Re: Street tires

I use Kumho KU39s on my trackday car. Decent grip in dry, very good in the wet (as I found out on a soaked Knockhill trackday last week) and £300ish a set fitted on 18" rims - 225s front & 255s on the rear. Think they are a bit harder compound than the likes of the Toyo's but have stood up well to t...
by Prophead
Mon Aug 27, 2018 9:41 pm
Forum: Your Garage Scene
Topic: Westfield Seight 4.6 Vems
Replies: 2
Views: 947

Re: Westfield Seight 4.6 Vems

Congrats! That looks like a proper weapon, think you'r gonna need a spare set of rear tires to hand at all times :D
by Prophead
Wed Aug 01, 2018 6:48 pm
Forum: Engines Area
Topic: 3.5 9.75:1 Puffing blue smoke
Replies: 16
Views: 1344

Re: 3.5 9.75:1 Puffing blue smoke

Just to complete the tail of this saga I think I have found the route cause of all my smoke wows. The fuel pressure regulator was incorrectly set delivering about 7psi to my Edelbrock 1404. Having checked the manual i have reset it to the correct 5.5psi. I think the additional fuel pressure was havi...
by Prophead
Mon Jul 30, 2018 7:33 am
Forum: Please Tell Us About Yourself
Topic: Hi from Scotland
Replies: 9
Views: 916

Re: Hi from Scotland

Ian Anderson wrote:
Sun Jul 29, 2018 5:37 am
Time to make a convoy?

Currently in Bonnyrigg!

Ian
We are practically neighbours! I'd love to get a look at your GT40
by Prophead
Mon Jul 30, 2018 7:30 am
Forum: Engines Area
Topic: 3.5 9.75:1 Puffing blue smoke
Replies: 16
Views: 1344

Re: 3.5 9.75:1 Puffing blue smoke

unstable load wrote:
Sat Jul 28, 2018 2:40 am
Prophead wrote:
Fri Jul 27, 2018 8:45 am
Update...
b) had the engine hydro carbon cleaned
What does that involve, please?
have a look at this site, should answer your question
www.enginehydrocarbonclean.co.uk
by Prophead
Fri Jul 27, 2018 8:45 am
Forum: Engines Area
Topic: 3.5 9.75:1 Puffing blue smoke
Replies: 16
Views: 1344

Re: 3.5 9.75:1 Puffing blue smoke

Update... I ruled out, for now, the valve stem seals as after careful inspection they are all present. I managed to get a bore scope into to the cylinders to have a look and number 8 (which had the lower compression test result) had significantly more carbon build up and looked a bit wet with oil ar...
by Prophead
Thu Jul 26, 2018 9:53 pm
Forum: Please Tell Us About Yourself
Topic: Hi from Scotland
Replies: 9
Views: 916

Re: Hi from Scotland

I'm also Scotland! Near Falkirk. Thinking a road trip to yours will be a fun drive and destination!

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