best Engine for 220-230 BHP.
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best Engine for 220-230 BHP.
I need to build a race engine max BHP 220-230.
What would be best a 3.5 or a 4ltr.
Its only going to be used on the track in a race series.
What would be best a 3.5 or a 4ltr.
Its only going to be used on the track in a race series.
Current V8 car TVR 400SE 240 BHP
Current Project TVR Tasmin Race, with 3.9 running at 230 BHP
Currently building a 4.6 300 BHP Xbolted Engine for it. Solid Lifters and Group A rockers, Stange 4 heads, Pocketed piston, fully balanced.
Current Project TVR Tasmin Race, with 3.9 running at 230 BHP
Currently building a 4.6 300 BHP Xbolted Engine for it. Solid Lifters and Group A rockers, Stange 4 heads, Pocketed piston, fully balanced.
- Ian Anderson
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Normally bigger cubic capacity is better as it gives more torque
But the bigger you go the less the engine likes to rev so you could end up needing to change gear mid corner after "running out of revs"
Make sure you thus know what your rev range will be in the twisties - may need to alter geabox / diff ratios too to match where the engine will make the power.
I have a 3.9 in the GT40 and it's fairly heavily worked and has dyno papers for the engine at about 265hp but it is a pig less than 2000 rpm uness on the power. It also is very loud bcause of the exhaust valve timing - another thing you need to keep in check on a race car (damn tree huggers building old folks homes on racetrack noise paths)
Ian
But the bigger you go the less the engine likes to rev so you could end up needing to change gear mid corner after "running out of revs"
Make sure you thus know what your rev range will be in the twisties - may need to alter geabox / diff ratios too to match where the engine will make the power.
I have a 3.9 in the GT40 and it's fairly heavily worked and has dyno papers for the engine at about 265hp but it is a pig less than 2000 rpm uness on the power. It also is very loud bcause of the exhaust valve timing - another thing you need to keep in check on a race car (damn tree huggers building old folks homes on racetrack noise paths)
Ian
Owner of an "On the Road" GT40 Replica by DAX powered by 3.9Hotwre Efi, worked over by DJ Motors. EFi Working but still does some kangaroo at low revs (Damn the speed limits) In to paint shop 18/03/08.
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.....just had a look at my plot from Emerald,
276hp@ 6100rpm,
and
253ft,lbs of torque @ 5100rpm and over 130ftlbs at 2000rpm,
Thats from a 3.9, with a fair bit of work, but NOTHING special apart from Throttle bodies
Shame its in bits at the moment, but it is starting to come back together, better and stronger.
Ian
276hp@ 6100rpm,
and
253ft,lbs of torque @ 5100rpm and over 130ftlbs at 2000rpm,
Thats from a 3.9, with a fair bit of work, but NOTHING special apart from Throttle bodies
Shame its in bits at the moment, but it is starting to come back together, better and stronger.
Ian
THE SMOKING GNU
12.604 with an old boiler of a RV8 and no gas
WHY are there so many IANS on this site???????
12.604 with an old boiler of a RV8 and no gas
WHY are there so many IANS on this site???????
oh fooooooooook
Regards Tony C (COOPS)
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Procharger D1SC supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 416 RWHP, (boost leak)
Forged 4.8 V8 kitted out with the dogs Cajones of parts.
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Procharger D1SC supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 416 RWHP, (boost leak)
Forged 4.8 V8 kitted out with the dogs Cajones of parts.
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk
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- Joined: Sat Nov 18, 2006 1:59 pm
- Location: Far Far south, any further south and my feet are wet
nah can't afford fook all at the mo mate,
still paying off bills from earlier in the year after a death in the family.
you got no worries from me next season,
still paying off bills from earlier in the year after a death in the family.
you got no worries from me next season,
Regards Tony C (COOPS)
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Procharger D1SC supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 416 RWHP, (boost leak)
Forged 4.8 V8 kitted out with the dogs Cajones of parts.
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk
MS2 V3.57 Ecu mapable efi and wasted spark ignition.
Procharger D1SC supercharger and Cossie RS500 Intercooler @ 14psi of Boost. 416 RWHP, (boost leak)
Forged 4.8 V8 kitted out with the dogs Cajones of parts.
Sponsored by: www.v8performanceparts.co.uk, www.interpart.biz, www.caprisport.com & www.baileyperformance.co.uk
Ok a 3.9 or 4.0 it is then.
So best Idea due to the BHP limit would to build it for torque.
Any advice for this would be handy.
I will be going Injection with a emerald.
Plus planing to make my own plemum, with tripple throtle boddies
Thanks
Leigh
So best Idea due to the BHP limit would to build it for torque.
Any advice for this would be handy.
I will be going Injection with a emerald.
Plus planing to make my own plemum, with tripple throtle boddies
Thanks
Leigh
Current V8 car TVR 400SE 240 BHP
Current Project TVR Tasmin Race, with 3.9 running at 230 BHP
Currently building a 4.6 300 BHP Xbolted Engine for it. Solid Lifters and Group A rockers, Stange 4 heads, Pocketed piston, fully balanced.
Current Project TVR Tasmin Race, with 3.9 running at 230 BHP
Currently building a 4.6 300 BHP Xbolted Engine for it. Solid Lifters and Group A rockers, Stange 4 heads, Pocketed piston, fully balanced.
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Do a "Your Garage Scene" about your emerald project for the dumbos like me please mateI will be going Injection with a emerald.
I should be Emeralding my V8 AND Megasquirting my son's 3000 this winter so I need pathfinders like you desperately. Be prepared for many questions. If you can wait for the Autocar show at the NEC in January I think they do a show discount
Muchos gracias in advance
It's an engine Jim.....but not as we know it
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Well I've never done one before Either.
But seems to be the best way to go esp if you want to keep upgrading.
The plan is to start in group C limited to 220-230 BHP.
Then if I do ok upgrade the engine and move up to group B.
I do have a friend that's currently doing it so will be getting some help from him.
But seems to be the best way to go esp if you want to keep upgrading.
The plan is to start in group C limited to 220-230 BHP.
Then if I do ok upgrade the engine and move up to group B.
I do have a friend that's currently doing it so will be getting some help from him.
Current V8 car TVR 400SE 240 BHP
Current Project TVR Tasmin Race, with 3.9 running at 230 BHP
Currently building a 4.6 300 BHP Xbolted Engine for it. Solid Lifters and Group A rockers, Stange 4 heads, Pocketed piston, fully balanced.
Current Project TVR Tasmin Race, with 3.9 running at 230 BHP
Currently building a 4.6 300 BHP Xbolted Engine for it. Solid Lifters and Group A rockers, Stange 4 heads, Pocketed piston, fully balanced.
-
- Forum Contributor
- Posts: 2419
- Joined: Sat Nov 18, 2006 1:59 pm
- Location: Far Far south, any further south and my feet are wet
Probably the basic fundimentals for your engine would be Buy once not twice, upgrade to your final spec on the basics, make it strong enough to exceed your final plans, although it may appear to be overkill initially building a bottom end to cope with 325 hp when you are only producing 240, In reality the bottom end of the Rover is pretty good in stock form, my 3.9 has sat a 7k many times, The basics I would be looking at for the bottom end would be ARP bolts and studs throughout, rod bolts, mains and head studs, one personal choice would be a lighter Steel flywheel as I have seen a couple of flywheels explode.
Stock HRC rods seem to be OK and the pistons are not too bad either, but a nice set of Accralites would be beneficial, just a tad expensive, ballancing will also help with lognjevity, if you go the route of ARP rod bolts, the rods WILL need checking for ovality
Stock HRC rods seem to be OK and the pistons are not too bad either, but a nice set of Accralites would be beneficial, just a tad expensive, ballancing will also help with lognjevity, if you go the route of ARP rod bolts, the rods WILL need checking for ovality
THE SMOKING GNU
12.604 with an old boiler of a RV8 and no gas
WHY are there so many IANS on this site???????
12.604 with an old boiler of a RV8 and no gas
WHY are there so many IANS on this site???????