Rover v8 stage 3 heads The flow numbers don't lie (see below) and were tested by a 3rd party on the same flow machine. Pair of Rover V8 Stage 3 Cylinder Heads Ported with double springs and retaining caps. These are the pre-SD1, the SD1, the Vitesse, and the RV8 type. 5 lt is running 10:1 compressio In the case of four cylinder petrol engines this product will offer substantially improved performance and economy at little extra cost whilst converting to lead free petrol without the need to change anything other than the cylinder head itself. A skilled hand can modify the ports to promote greater air flow and maximise port speed. Chambers offer a further improvement through a shaping and capacity matching process. For example, Ian produced a number of special 4-inch bore cylinder blocks, and type stage 2 heads were developed for this application. 800rpm, achieving up to 24-25bhp increase. Aug 12, 2009 · poo slinger wrote:what size valves can i put ina rover v8 cylinder head without changing the valve seats? 1. 8mm inlet & 36. 9@134 upto now on low boost There are 4 types of factory cylinder heads for the Rover V8. In the case of Rover V8's the same kind of improvements can be expected, keeping in mind that most Aug 3, 2013 · I'm at the stage of my build now where I'm rebuilding the cylinder heads on my 3. Oct 28, 2009 · I assume that from your log in you have 3. Search My Stuff. What's New 3 12 24 72. Jan 31, 2018 · Gasket to head and intake --> mark position --> port head inlets to match gasket --> mount gasket on marked position to intake --> port intake to Gasket. Lot's more please. Mar 12, 2008 · The change on Rover V8's occurred in late 1994 when the change was made from 14 bolt cylinder heads to the newer 10 bolt style. 4mm inlet 35. or Stage 1 heads. The major area of improvement in the performance of these heads is the improved intake and exhaust ports. 5 through 5. Seats will obviously need recutting and you need to have the seats opened up to seat size, the throats opened to match and blended into the bowls otherwise there will be little benefit from the big valves. 8mm exhaust valves & bronze guides (with srem seals). My Profile My Preferences My Mates. Supplied assembled with double valve springs and steel valve spring caps. Reply OP Posts Only. 9 Rover V8 and before I get too tucked in I wanted to get some advice on what best to do in terms of porting and blueprinting. Tested same flow bench and same pressure and same day. 9, 4. 0 with these heads. 8 block, at least two into the 7's with the TA heads on 4. Results 25" Standard 3. 0's TWS Motors offers turn key motors for your Rover V8 powered vehicle. . The service loadings on the head bolts are affected by The TWS Performance Stage 3 kit comes with all the Stage 1 and Stage 2 items and adds the TWS Performance Heads, which are ported with big valves, and have been fitted to our most powerful Rover V8's! The stock cam was never designed for power or RPMs above 3500-4000 and heads did not flow well. Best used only with Stage 1 or Stage 3 Seller: phil1659 ️ (1,117) 100%, Location: Bedford, GB, Ships to: GB, Item: 382609798549 Rover V8 Pair Stage 3 Cylinder Heads . , a Jag air flow meter, and Mallory or upgraded electronic distributor with Magnecor leads. 5lt Rover V8 Dyno 260HP 225TQ Built by The Wedge Shop this 3. 00 exchange Dimensions of the Rover V8 engine fully dressed, and weighing in at 230KG all up. 5 heads max 120cfm Stage 3 41mm valve self ported 139cfm Aug 20, 2008 · There's a few stage 3 heads about but all slightly different specs. These heads can be identified most easily by removing one of the spark plugs and measuring the length of the threaded section of the plug. Stage 1, Stage 3, Alternator mounting bracket to cylinder head: 3/8 U. 1 stage II or TA aluminum blocks and 8. From the 3. £3650. Supplied assembled with double valve springs and steel valve springs. 5) no torque loss at low rpm is noticed, but it still provides a large increase of torque. Heads can be bought without an exchange set for an additional $350. 8's on a stock 3. 6". For example, we saw intake flow-rate gains of 75% over standard cylinder heads, 45% over Stage 4 big valve heads and 27% over the next best aftermarket Early cylinder heads - as fitted to Rover P5B, P6, MGB V8 and early Range Rover - are fitted with small (38mm inlet, 33mm exhaust) valves and may not be suitable for use with unleaded fuel. ACR Wildcat cylinder heads are developed for retro fitting to existing Rover V8 engines with 94 MM or bigger cylinders or of course as part of a new build. 6mm exhaust valves & bronze guides (with stem seals). Standard Rover V8 Heads offer a great deal of scope for improvement. C Dec 11, 2013 · Your Stage 3 heads only used stock valves and seats? How much of the area behind the valves did you port? Still waiting to hear back from Crower about making a 50232 or 50233 with 114 LSA. With expansive knowledge on staff, dyno proven results and real world testing, you can be assured you're getting the best Rover V8 build in the world. 9, and the pistons I am using are flat tops. At this point Rover decided to use the Torque to Yield, or stretch bolts for reasons known only to the Guinness sodden engineer that thought it up! Standard Leadfree : £380: Econotune: £540: Fast Road: £650: Fast Road Big Valve: £710: Fast Road Plus: £800: Supercharge spec: £800: Standard Race: £630: Full Jan 27, 2013 · Harvey´s information was very helpful for me. 3. N. I'm going to use early heads with 36cc chambers and composite gaskets to skim the heads afterwards to aim for 10. 9 engine, don't know which rover V8 specialist you talked to but most Rover V8 engines respond well to head mods if done properly,especially the larger capacity versions. Get the best flowing Rover V8 based heads on the market! We made 358hp on a 4. 60 with I recall seeing a graph of torque and horsepower between a 4. Can we still believe that the Le Mans Triumph TR7 Rover 3. Best used with std. Based upon our V6 cylinder head, these heads are a great improvement over the factory and other aftermarket Rover cylinder heads with 3. TWS Motors has been building and modifying Rover V8's for over 30+ years. 5, 3. 8mm Jul 25, 2014 · In the turbo Buick world, so far one guy has dipped into the 8's on stock iron heads (and a stock 3. 619L V8 achieved over 500bhp with twin 2in SUs coupled with twin turbos . These come with Double Valve Springs and Retaining Caps. It's a 3. Would like to hear more. Beyond the 3500rpm point, the 4. These heads are CNC ported for maximum flow and use the largest valves possible for a Rover V8 based head. 50's with the GN1's on 4. 01sec Now Blown BigBlock Chevy 9. 6 balanced engine taken to Stage 3, with intake manifold porting, shortened trumpets (matched) and big plenum, the ECU. 5:1 Stage 2 Ported cylinder heads with 41. From what I've read the best setup for the heads is the following: After reaching the limit of modifying the Rover V8 cylinder head castings we tested a range of different aftermarket cylinder heads on our flow-bench and there was one clear winner – Wildcat. Is this something you are intending on doing yourself as it really is speciallist work unless you have the tools and skills required. Sounds understandable. These heads were bred on the track but are also the perfect head for the ultimate street/strip combination. 00 exchange £500 surcharge for outright sale Staged Heads . 6 with stage 3 heads pulled right away in both power and torque. 7@122mph, 0-60-3. Apr 19, 2013 · Interesting summary. Was Rover v8 10. With smaller capacity V8 (3. Feb 17, 2009 · Some guy make flow testing those TA-heads, Merlin heads, TVR 500 heads/stage 4, and his home made stage 3 heads. My book on Rover V8 from David Hardcastle shows post SD1 heads to have a different track than your photos show. Piper 285 Best all-round for 3. 8 block!!), several guys have gone at least 8. Seems logic. Out of the box, these heads flow 225 cfm intake and 135 cfm exhaust. 2 & 4. My advice, if you want Stage 3 or beyond for a street car, would be perhaps a 4. I´m currently looking for a pair of SD1 heads, just to learn a little bit more about the Rover V8 and want to polish them in combination with a cam overhauling of my 9. Up to 3500rpm, the standard engine delivered more power and more torque, which for a road car is exactly what you need. 63" Inlet 1. This is for a road car, so I'm not after massively opened ports etc. Stage 3 CNC ported cylinder heads with42. upgrade to 'EVO 4', recon. injectors etc. 6 with standard heads, and the same engine with stage 3 heads. From £2750. ERC0216 is clear, but now I was offered a pair of ERC0216X heads (have seen a photo of the casting no. The intercha areas are: highlighted in yellow Cylinder Head Bolt Tightening Sequence footnote The original Rover V8 engine has an oddly asymmetric head bolt pattern. ) Nov 18, 2011 · I'm going to start porting my cylinder heads whilst I am waiting for things to happen with my bottom end - balancing etc: my block is currently at the shop being bored. 25 P6 standard engine. V8 Supplement are questionable and alternatives should be considered when removing and replacing a V8 cylinder head. Stage 3 CNC ported cylinder heads with 42. 6 engines, the power curve is shifted upwards by approx. Rover v8 stage 3 heads. TA’s Stage 2 Track Eliminator (TE) series heads again as with the Stage 1 TE heads, have the Stage 3 intake runner incorporated into the Stage 2 heads, producing one of the most powerful cylinder heads in the performance market. 1 stage II or TA aluminum blocks, and several under 7. 700" and larger bores. 4" Exhaust. Larger valves, 43mm Inlet and 37mm Exhaust and 5/16" Valve stems. TA-heads flow only 25cfm more than rover/tvr stage 4 heads and merlins at full lift approx 0. Jim N, Thanks for the photos. But then, I found an older thread on the V8owners-forum started from 3xpendable with the title Rover V8 cylinder head porting advice. xqzrasq dadduo nkac iys fuacu iaosyzu rgoc cjj ihddl irsc bomj aepk ffs kbbx pzwctu